INSTALLER’S SYSTEM SETUP
GUIDE
E 2012 Lennox Industries Inc.
Dallas, Texas, USA
icomfort Wi-Fit Thermostat
Touch Screen Programmable Communicating Thermostat
CONTROLS
away
mode
506920−01
09/12
Supersedes 05/12
outdoor
temperature
indoor temperature
set temp
heat
or
cool
80
75
cool−to
icomfortt−Enabled Units
fan is
AUTO
72
AOUFTFO
heat to
G71MPP−03 or later
SLP98−01 or later
SL280−03 or later
XC17−02 or later
XP17−02 or later
XP19−06 or later
XC21−05 or later
XP21−01 or later
indoor humidity is 41%
system is cooling
EL296V−01 or later
CBX40UHV−02 or later
CBX32MV−06 or later
9:39 am Aug 15, 2012
Wi−Fi
Shipping and Packing List
THIS MANUAL MUST BE LEFT WITH THE HOMEOWNER
FOR FUTURE REFERENCE
1 − icomfort Wi-Fit thermostat
4 − Mounting Screws
4 − Wall Anchors
1 − Installation Quick-Start Guide
1 − Installer’s System Setup Guide
1 − Homeowner’s Manual
1 − Warranty card
NOTICE
Read this manual before programming this thermostat.
Use this thermostat only as described in this manual.
09/12
506920−01
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*2P0912*
*P506920-01*
icomfortWi-Fi
t
Thermostat − Technical Description and Features
cating, color display touchscreen, 7−day programmable thermostat. It stores
system parameters and settings in nonvolatile memory (i.e., it retains data
when electrical power fails or is turned off). It is designed for 4−wire connec-
BEST PRACTICES! Keep all communication wiring as far away from house
electrical wiring and large electrical appliances as possible (15’ [5m] recom-
mended).
The thermostat also:
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supports three languages (English, French, Spanish),
supports air conditioning units or heat pump units with up to four stages
of heat / two stages of compressor operation (2 stages of heat pump
heating, 2 stages of auxiliary back−up heating, 2 stages of emergency
heating),
The icomfortWi-Fit thermostat can connect to online services via the inter-
net through the homeowner’s Wi−Fi access point. After online registration is
completed, the system may then be accessed by the homeowner from any-
where using a remote internet connection via computer or personal commu-
nicating device.
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supports Indoor Air Quality with time-based notification of consum-
ables including media filters, UVC bulbs, humidifier pads, and Pure-
Airt system catalyst service / replacement,
supports variable−capacity / multi−stage heat/cool, universal compati-
bility (gas/electric/heat pump/ac), and is dual fuel capable (icomfort−
enabled HP only) with two balance points.
Thermostat
connections
R
i+ i− C
Important
Connections to non−communicating outdoor units and accessories are de-
scribed in the Quick−Start Installation guide. (Wiring diagrams are also
Maximum total length of all
connections on the RSBus is
limited to 1500 ft. (450 m).
Max. length between compo-
nents is 300 ft. (90 m).
Supports
RSBus
S
S
S
S
S
S
S
Humidification Measurement and Control,
Dew Point Adjustment Control
Dehumidification Measurement and Control
Humiditrol Enhanced Dehumidification Accessory (EDA)
Multi-Stage HVAC Systems
Minimum wire
size is 18 gauge
®
icomfortt −enabled Furnace Control
icomfortt −enabled Air Handler Control
icomfortt −enabled Outdoor Unit Control
Note: icomfort
Wi-Fit thermo-
stat does not
require
Equipment Maintenance Reminders
AutochangeoverMode −− Permits control of heating, cooling, humidifi-
cation, and dehumidification without user involvement.
External Sensors − outdoor temperature, discharge air
Humidify Control
shielded cable
wiring.
Outdoor Temperature Sensor (option)
Dehumidify Control
Figure 1. icomfort by Lennoxt system
Communicating outdoor units contain a built−in outdoor temperature sensor.
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 3
Installation and Setup
IMPORTANT! Make sure the router is capable of, and set to operate in
wireless network ꢀb" mode. Check router utility program or contact
service provider for help. When determining the location for the Wi−Fi ther-
mostat, be sure it is in an area near enough to the homeowner’s Wi−Fi router
to ensure good communications signal between the thermostat and the rout-
er. (Hint: use a smart phone with Wi−Fi to find and determine signal
strength.)
scroll through the settings, the right hand side will show the current value.
For example, current value: 9:39 am Aug 15, 2012 shows the current date
for Time and Date.
To adjust a setting, highlight it, then
press edit
system settings
Time and Date
Refer to the Quick Start Guide for information about installing the thermostat
on a wall and for wiring diagrams for field wiring the thermostat to the system
using one of a number of possible configurations. (Wiring diagrams are also
current value:
Daylight Saving Time
Circulate Fan ON Time
System Name
9:39 am Aug 15, 2012
NOTE − If electric heat strips are used with an icomfortt−enabled air handler,
the strips MUST be configured on the air handler control (AHC) board before
beginning the ꢀdiscovery" sequence below.
Dealer Number
Dealer Name
edit
Dealer Address
Dealer Phone
After all wiring connections are made, apply power to the system. 24VAC will
power up the thermostat.
Dealer Email
back
After power is applied to the thermostat for the
first time, the processor checks the system for
installed communicating devices, the ꢁSo Sim-
ple. So Smart. So Comfortable" screen dis-
plays; followed by ꢁUse this thermostat?"
screen. Touch press here to continue. During
next
Dealer Website
9:39 am Aug 15, 2012
Figure 2. ꢀSystem settings" screen
(Thermostat 1)
Use this Thermostat?
the setup process, alerts may pop open to provi-
de the installer with information that affects the
press here
setup. Correct the cause of any such alerts
prior to continuing setup.
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Page 4
Change settings
Circulate Fan ON Time Range
is 15 to 50 %
Default is 35, inc: 1
up/down
arrows
If you want to change a setting, use one of the Settings change tools shown
been made, use save to store the changed data or cancel to exit the screen
and return to the list of settings.
set−to
45%
save
cancel
Dealer Number
radio
buttons
Use the arrows to scroll to the Dealer Number setting. Press edit and use the
store the identification.
Outdoor Unit Type
Select one
Not Installed
1 Stage A/C Unit
1 Stage HP Unit
2 Stage A/C Unit
2 Stage HP Unit
system settings
To adjust a setting, highlight it, then
press edit
Time and Date
Daylight Saving Time
Circulate Fan ON Time
System Name
current value:
save
cancel
Dealer Number
Dealer Name
keyboard
tool
Dealer Name
edit
Dealer Address
Dealer Phone
Dealer Email
Dealer Website
back
next
9:39 am Aug 15, 2012
Figure 3. Settings change tools
Figure 4. Entering ꢀDealer Number"
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 5
Circulate fan ON time setting
Table 1. System setting defaults and range
default
system
setting
range/
condition
use
NOTE − If the circulate fan mode is on, a timer is set to measure all the time
that the fan is blowing, regardless if it is running to deliver heating or cooling
or just for circulation.
Time and Date
Enabled
Daylight Saving
Time
ꢁCirculate" is enabled on the user’s home screen or system settings page.
It keeps air circulating from 15% to 50% percent of time. The following set-
tings approximate how long the fan will run at these typical settings:
Enabled/Disabled
Circulate Fan
ON Time
15 to 50% (in 1%
increments)
35%
15% (9 minutes fan run time per hour)
25% (15 minutes fan run time per hour)
35% (21 minutes fan run time per hour)
45% (27 minutes fan run time per hour).
(alpha−numeric
characters)
use keyboard
tool to change
System Name
Dealer Number
ꢀ
****
indicates the tools used to make changes.
Dealer Name
Dealer Address
Dealer Phone
Dealer Email
Lennox
ꢀ
(alpha−numeric
characters)
use keyboard
tool to change
1−800−9−LENNOX
ꢀ
Dealer Website
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Page 6
Set time and date
follows:
S
S
S
S
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Use the left and right arrows to change the month and year.
Touch a day of the month to select it.
To adjust a setting, highlight it, then
press Edit
system settings
Press on the hour or minute; up down arrows appear to allow change.
Touch the am/pm field to toggle it between am and pm.
Time and Date
current value:
Daylight Saving Time
9:39 am Aug 15, 2012
Circulate Fan ON Time
When the correct date and time is set, press save to save settings and
return to previous settings screen.
System Name
Touch next to continue to next screen.
Dealer Number
edit
Dealer Name
Dealer Address
Dealer Phone
Dealer Email
system settings
January 2012
S
1
M
2
T
3
W
4
T
5
F
6
S
7
back
next
Dealer Website
09 : 39 am
9:39 am Aug 15, 2012
8
9
10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
Figure 5. View/edit time and date
save
9:39 am Aug 15, 2012
Figure 6. Set current time and date
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 7
Use ꢀabout" screen & access ꢀAdd or Remove Non−communicating equipment" screen
The ꢁabout" screen shows details of discovered installed equipment.
From the ꢁsystem devices" screen, use arrow buttons to scroll to a device; then press the about button. Use the up/down arrows to scroll through and view
additional information about the selected device. When finished viewing, press the back button.
Press next to advance to the ꢁAdd or Remove Non−communicating equipment?" screen.
device feature list
Language Support
device description
Equipment Type Name
Furnace
Unit Model Number
Unit Serial Number
Equipment Type Name
Furnace
system devices
System
press ’about’ for
more information on
a highlighted device
Unit Nominal Capacity
Number of Heating Stages
Heating Capacity by Stage
Indoor Blower CFM Range
Control Software Revision
Control Model Number
about
(returns to
system
devices
screen)
Heat Pump
Furnace
Thermostat
back
Add or Remove
Non−communi-
cating equip-
ment?
system devices
System
yes
back
next
Heat Pump
Furnace
9:39 am Aug 15, 2012
Thermostat
If no, press Next
Step.
back
next
Figure 7. Using the ꢀabout" screen and accessing ꢀAdd or Remove Non−communicating equipment" screen
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Page 8
Add or Remove Non−communicating equipment
communicating equipment" screen.
HUMIDITY CONTROL TIPS
S
The standard humidification mode is ꢁBasic" (humidifier is energized
during a call for heat, if there is a humidification demand).
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Sensed outdoor temperature, required for some features, is provided
from one of the following sources:
for adding/removing an outdoor unit.
A
B
C
downloaded via Wi−Fi when available (primary source),
sensor furnished with icomfortt−enabled outdoor units,
separate outdoor sensor connected to the furnace or air handler
ꢁoutdoor sensor" connections.
communicating humidifier which will be controlled by the icomfort Wi-Fit
thermostat through the ꢁH" or ꢁHUM" terminals on the furnace or air handler.
NOTE − If no source for outdoor temperature is present, ꢀBasic and
Precision Dew Point Control" modes are not available.
non−communicatingdehumidifier controlled by the icomfort Wi-Fit thermo-
stat through the ꢁDH" output on the furnace or air handler.
S
If you do not have the ability to select or adjust the Humidity RH set-
point on the ꢀIndoor Humidity" button, the control is set for ꢁDisplay
Only." In the installer program, go the equipment button and select
ꢁSystem" and press the edit button. Select ꢁHumidification Control
Mode" and press edit. Choose ꢁBasic," ꢁPrecision," ꢁBasic Dew Point
Control" or ꢁPrecision Dew Point Control" and press save.
Adding non−communicating accessoriesꢀAdding maintenance
timer reminders to accessories is a simple process of ꢁinstalling" the device,
which effectively tells the thermostat to activate access to its service timers.
NOTICE
For details about how the humidification and dehumidification
modes operate and how to configure those modes, see additional in-
formation beginning on Page 18.
Timers are available for two (2) filters, Humidifier pad, UV bulb maintenance
and the PureAirt Air Purification system.
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 9
Add Non−Communicating Outdoor unit
To add (or remove) an outdoor unit that is not icomfortt −enabled, you must be at
the ꢁAdd or Remove Non−communicating equipment?" screen.
Add or Remove
Non−communicating
equipment?
System Devices
yes
System
Furnace
to add/remove/adjust a device,
select it, then press edit
settings (if present) using a similar process.
non−communicating device list
Outdoor Unit Type
Humidifier
NOTE − If the defaults are correct, you do not have to make any changes, but you
current value:
Not Installed
Dehumidifier
edit
Outdoor Unit Type
Select one
non−communicating device list
to add/remove/adjust a device,
select it, then press edit
Not Installed
1 Stage A/C Unit
2 Stage A/C Unit
2 Stage HP Unit
1 Stage HP Unit
Outdoor Unit Type
current value:
Outdoor Unit Capacity
Outdoor Unit 1st Stage Capacity
Humidifier
2 Stage AC Unit
Outdoor Unit Capacity
Range is 18 to 60
Default is 36, inc:1
please view and save all
red settings
Dehumidifier
edit
save
cancel
set−to
36
save
cancel
back
9:39 am Aug 15, 2012
Figure 8. Add non−communicating deviceꢁOUTDOOR UNIT
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Add (or Remove) Humidifier (skip if no humidifier is being used)
NOTE − Adding humidity regulating non−communicating devices may be a 2−step procedure:
1st, the device must be installed (this page; after the humidifier is installed, the operation
mode defaults to ꢀBasic").
Before adding a humidifier, be sure that:
S
the humidifier is wired to the furnace or air handler control as shown on the Optional
2nd, (if you want another mode, i.e. Precision, Basic Dew Point, or Precision Dew Point,
S
the entire system is wired, powered up, and the thermostat has detected the system’s
installed communicating devices, and you are at the ꢁAdd or Remove Non−communi-
To add (or remove) a humidifier,:
system devices
Add or Remove Non−
communicating
equipment?
yes
System
Heat Pump
non−communicating device list
to add/remove/adjust a device,
select it, then press edit
Humidifier
current value:
Dehumidifier
5. The ꢁAdd or Remove..." screen reappears with your addition shown in the system
Not Installed
Electronic Air Cleaner
Humidifier
Select one
edit
6. (If you want other than the default ꢀBasic" mode of operation) Configure the
Not Installed
Bypass (24VAC) Humidifier
Power (120VAC) Humidifier Bypass and Power Humidifier
(available with furnace equipped systems only)
system devices
System
Add or Remove Non−
communicating
equipment?
yes
save
cancel
Heat Pump
to add/remove/adjust a device,
select it, then press edit
non−communicating device list
Furnace
Thermostat
Humidifier
current value:
Bypass (24VAC) Humidifier
Dehumidifier
Bypass (24VAC) Humidifier
Electronic Air Cleaner
edit
back
next
back
9:39 am Aug 15, 2012
Figure 9. Add or remove non−communicating deviceꢁHUMIDIFIER
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 11
®
Add (or Remove) Humiditrol or Auxiliary Dehumidifier (skip if no dehumidifying device is being used)
NOTE − Adding humidity regulating non−communicating devices may be a 2−step procedure:
1st, the device must be installed (this page; after the dehumidifier is installed, the opera-
Before adding a dehumidifier, be sure that:
S
the dehumidifier is wired to the furnace or air handler control as shown on the Option-
tion mode defaults to ꢀBasic").
®
2nd, set Humiditrol comfort adjust overcooling and the min/max dehumidification set-
points if desired (see Page 16).
S
the entire system is wired, powered up, and the thermostat has detected the sys-
tem’s installed communicating devices, and you are at the ꢁAdd or Remove Non−
communicating equipment?" screen (see figure 7, Page 8).
To add (or remove) a dehumidifier, you must be at the ꢁAdd or Remove Non−communicating
equipment?" screen.
Add or Remove
Non−communicating
equipment?
system devices
yes
System
Furnace
to add/remove/adjust a device,
select it, then press edit
non−communicating device list
Humidifier
5. The ꢁAdd or Remove..." screen reappears with your addition shown in the system
current value:
Dehumidifier
edit
Not Installed
Electronic Air Cleaner
®
Dehumidifier
Humiditrol NoteꢁBy default, the Humiditrol Comfort Adjust (HCA) is configured for maxi-
mum overcooling and minimum dehumidification setpoint of 40% RH. If these settings are
satisfactory, no further configuration is necessary. If another setting is needed, change HCA
Select one
Not Installed
Humiditrol
Auxiliary Dehumidifier
save
cancel
system devices
System
Add or Remove Non−
communicating
equipment?
yes
to add/remove/adjust a device,
select it, then press edit
non−communicating device list
Heat Pump
Furnace
Humidifier
current value:
Dehumidifier
Thermostat
Humiditrol
Humiditrol
Electronic Air Cleaner
edit
back
back
next
Figure 10. Add or remove non−communicating deviceꢁDEHUMIDIFIER
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Page 12
Adjust a setting screen (communicating devices)
Use arrows to select a device from the ꢁsystem devices" list; then use the about button to view information (shown on Page 8) about communicating
devices (information about other devices is not available).
Use resetAll button to un−install all non−communicating devices that were added through ꢁAdd or Remove..." screen and to reset any device settings made
through this ꢁAdjust a setting..." screen to the factory defaults. (While editing a communicating device, the reset button is limited to only the selected device.
Use this screen to access communicating devices’ settings (pressing buttons numbered from 1 to 6 in figure 11 for an example of changing heating airflow;
more examples are shown on the next page). Use back to return to the previous screen or next to go on. A complete list of parameters, their defaults and
(if resetAll
is pressed)
To adjust a setting,
highlight it, then press
Edit
system devices
System
about
Furnace
Furnace
resetAll
resetting a device to its factory default
Thermostat
(resetting ALL devices to their factory default)
settings will cause the system to restart the
setup process.
1
2 Stage HP Unit
Power (120VAC) Humidifier
Humiditrol
edit
2
To continue, press CONFIRM or press CANCEL
confirm
cancel
Low Heating Airflow
current value:
system devices
Equipment Name
Heating Airflow Control Type
Low Heating Airflow
325
Low Heating Airflow
Range is 325 to 450
Default is 400, inc:25
High Heating Airflow
High Cooling Airflow
Airflow Profile − Cooling
High HP Airflow
3
reset
edit
set−to
5
325
Continuous Indoor Blower Airflow
4
save
cancel
6
back
Figure 11. Adjust communicating device screens
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 13
Use the up/down arrows to scroll through the device’s settings. The current setting will be displayed on the right−hand side of the screen (figure 12). For
example, current value: disabled. Press edit if you want to modify that setting, or press back to return to the previous screen.
Available settings for the devices depend on the installed components. Shown below is an example of enabling and changing the balance point control from
default (Disabled) to Enabled. After selecting Enabled, press save to save the changes and return to the previous screen.
The returning screen may appear with the message in red ꢁplease view and save all red settings." In the example in figure 13, note that two additional items are
listed in red. Use the arrows to scroll and highlight each item appearing in red. Press edit, make any desired changes, and press save.
When all affected settings have been edited/saved, the red message disappears. Press back to return to the ꢁTo adjust a setting..." screen.
If no more adjustments are necessary, press next to advance to the ꢁselect tests to run" screen (see Page 19).
System
System
Balance Point Control
Balance Point Control
Staged Delay Timers
2nd Stage Delay
Staged Delay Timers
current value
current value
2nd Stage Delay
3rd Stage Delay
Disabled
3rd Stage Delay
Enabled
Balance Point Control
Lock In 2nd stage HP by Outdoor Temp
Balance Point Control
High Balance Point
Balance Point Control
edit
please view and save all
red settings
edit
Select one
Disabled
Low Balance Point
reset
High Balance Point
Range is −17 to 75
Default is 0, inc:1
Enabled
Humiditrol Comfort Adjust
Humidification Control Mode
Min Dehumidification Setpoint
back
set−to
save
cancel
50
save
cancel
Figure 12. Accessing device to modify
Figure 13. Modify device settings
G71MPP or SLP98 Furnace Note:
If your icomfort Wi-Fit thermostat is being used with a G71MPP or SLP98 furnace and is set to variable−capacity mode of operation (the icomfortt default
with these units), the thermostat’s settings for stage timers are ignored (even if shown enabled in the thermostat). The stage timer will be used on the cooling
side. The furnace software sets and controls the firing rates. The only other controlling factor is the stage temperature differentials. In Load−Tracking Variable
Capacity (default for these furnaces), both stage timers and temperature differentials are ignored.
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Page 14
Adjust a setting... Configure Humidifier (skip if no humidifier is being used or if humidifier is being used and default
ꢀBasic" humidification mode is desired)
Pre−adjustment REQUIREMENTS:
To adjust a setting, highlight it,
then press Edit
System Devices
System
Configure the device as follows:
System
Air Conditioner
Furnace
about
edit
Thermostat
selection).
Power (120VAC) Humidifier
System
Humidification Control Mode
2nd Stage Differential
Staged Delay Timers
You will not be able to advance to the next step until all red settings have been
removed..
current value:
Basic
edit
2nd Stage Delay
6. Press the back button to return to ꢁAdjust a setting..." screen.
Dehumidification Control Mode
Humidification Control Mode
NOTE − If the defaults for the settings shown in red, you are not required to make any changes,
will appear; press it to return to the ꢀAdjust a setting..." screen.
Humidification Control Mode
Select one
System
Max Humidification Setpoint
current value:
Display Only
Precision
Basic
1st Stage Differential
2nd Stage Differential
Basic Dew Point Co
Max Humidification Setpoint
Range is 15 to 45
Default is 45, inc:1
Precision Dew Point
45
Staged Delay Timers
2nd Stage Delay
Dehumidification Control Mode
Humidification Control Mode
Max Humidification Setpoint
OK/Humid Boundary
edit
set−to
please view and save all
red settings
save 3b
cancel
45
save
reset
cancel
Outdoor Temperature Reading
(returns to
adjust a
setting
back
screen)
9:39 am Aug 15, 2012
Figure 14. Adjust a non−communicating device settingꢁHUMIDIFIER
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 15
®
Adjust a setting... Configure Humiditrol or Auxiliary Dehumidifier
Pre−adjustment REQUIREMENTS:
To adjust a setting,
highlight it,
then press Edit
system devices
System
about
resetAll
edit
2nd, from the ꢀAdd or Remove Non−communicating equipment?", press next.
3rd, in the ꢀAdjust a setting..." screen, configure the device as follows:
Air Conditioner
Furnace
System
Thermostat
Humiditrol
®
Humiditrol Comfort Adjust. The current value defaults to Maximum Over-
®
System
Dehumidification Control Mode
now shows the new selection).
3rd Stage Delay
current value:
4th Stage Delay
Midpoint Overcooling
Lock In 2nd Stage HP by Outdoor Temp
Balance Point Control
Humiditrol Comfort Adjust
Min Dehumidification Setpoint
reset
edit
that the current value now shows the new selection).
6. Press the back button to return to ꢁAdjust a setting..." screen.
Humiditrol Comfort Adjust
Select one
Maximum Overcooling
Midpoint Overcooling
Minimum Overcooling
Dehumidification Control Mode
current value:
System
Staged Delay TImers
save
can
2nd Stage Delay
3rd Stage Delay
4th Stage Delay
45
Min Dehumidification Setpoint
Range is 40 to 60
Default is 45, inc:1
Humiditrol Comfort Adjust settings are
only available on units equipped with
a Humiditrol dehumidification device.
Mid/Max overcooling.
edit
Lock In 2nd Stage HP by Outdoor Temp
Balance Point Control
set−to
®
Humiditrol Comfort Adjust
Min Dehumidification Setpoint
OD/Humid Boundary
reset
42
save
cancel
(returns to
adjust a
setting
back
Outdoor Temperature Reading Calibr
screen)
9:39 am Aug 15, 2012
Figure 15. Adjust a non−communicating device settingꢁDEHUMIDIFIER
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Page 16
Adjust a setting... Configure Dehumidification (no dehumidifying device installed)
(skip if default ꢀBasic" dehumidification mode is desired)
Pre−adjustment REQUIREMENTS:
1st, NO physical dehumidification device has been installed.
2nd, configure the thermostat for dehumidification as follows:
System Devices
To adjust a setting, highlight it,
then press Edit
System
Furnace
System
about
edit
Thermostat
Control Mode. The current value defaults to Display Only. Press edit
2 Stage AC Unit
Power (120VAC) Humidifier
System
Dehumidification Control Mode
settings (e.g. Auto Changeover − Humidif. Deadband) using a similar
process.
2nd Stage Differential
Staged Delay Timers
current value:
2nd Stage Delay
Display Only
6. Press the back button to return to ꢁAdjust a setting..." screen.
Dehumidification Control Mode
Humidification Control Mode
OK/Humid Boundary
NOTE − If the defaults are correct, you do not have to make any changes, but you
to return to the ꢀAdd or Remove Non−communicating equipment?" screen.
edit
Outdoor Temperature Reading
Dehumidification Control Mode
current value:
System
Dehumidification Control Mode
Staged Delay Timers
Select one
Balance Point Control
Display Only
Precision
Basic
Precision
Min Dehumidification Setpoint
Range is 40 to 60
Default is 45, inc:1
Dehumidification Control Mode
Humidification Control Mode
Auto Changeover − Humidif. Deadband
Max Humidification Setpoint
Min Dehumidification Setpoint
OK/Humid Boundary
edit
set−to
please view and save all
red settings
reset
45
save
Outdoor Temperature Reading
cancel
save
cancel
back
9:39 am Aug 15, 2012
Figure 16. Adjust dehumidification when not using Humiditrol or an auxiliary dehumidifier
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 17
Humidification and Dehumidification Modesꢁhow they work
HUMIDIFICATION modes
In PRECISION mode, dehumidification occurs if all BASIC conditions are
true, except cooling demand may or may not be present. Also note that:
S
Maximum overcool from cooling setpoint is 2ºF.
BASIC & PRECISIONꢀThese modes allow user control of RH between 15
and 45%. These conditions must be met for either mode to operate:
S
Deadband temperature is limited to a minimum of 5ºF (instead of 3ºF
in BASIC or DISPLAY ONLY mode) because of 2ºF overcooling.
S
S
S
S
humidification mode has been enabled, and
the unit is in HEAT mode, and
®
Humiditrol or Auxiliary Dehumidifier mode requires:
humidification demand exists (24V present at H), and
BASIC mode also requires presence of heating demand [Y for HP
heat, or W for gas heat (W may be energized with G de−energized)].
NOTE − Systems using icomfortt and a dehumidifier − ꢀDehum" jumper on
furnace/air handler control does not need to be cut when using with a icom-
fort Wi-Fit thermostat.
S
S
S
Wi−Fi is operational or outdoor sensor is installed and set up
dehumidification has been enabled on installer settings, and
the unit is in COOL mode, (or if in AUTO, at least one thermostat cool-
ing call made prior to the dehumidification demand), and
a dehumidification demand exists (RH above setpoint), and
outdoor temp. below 95°F; indoor temp. above 65°F, and
DEW POINTꢀ(Available only if Wi−Fi is operational or outdoor sensor is at-
tached)
Basic Dew Point ControlꢀBasic Dew Point Control adjustment mode will
change the humidification setpoint based on the outdoor temperature and a
user−defined dew point adjustment setting.
S
S
S
®
for HUMIDITROL, adjust Humiditrol comfort parameters as follows:
MAX adj. − Indoor temp > 2°F above heating setpoint
Precision Dew Point ControlꢀPrecision Dew Point Control adjustment
mode will operate when these conditions are met:
HEAT Setpoint+COOL Setpoint
2
MID adj. − Indoor temp >
S
S
S
humidification mode has been enabled, and
the unit is in HEAT mode, and
humidification demand exists (24V present at H).
MIN adj. − Indoor temp > 2°F below cooling setpoint
Auxiliary Dehumidifier (stand alone dehumidifier)
When this option is selected, dehumidification will be allowed under the fol-
lowing conditions, provided there is NO call for humidification:
DEHUMIDIFICATION modes
S
S
In the absence of heating or cooling calls, or
Simultaneous with blower only calls.
NOTE − Basic and Precision dehumidification modes are functions of the
HVAC system with NO external dehumidification devices installed. Humidi-
trol and Auxiliary Dehumidifiers do not use these modes.
If the blower is required to operate while the auxiliary dehumidifier is running,
a separate wire must be installed from the auxiliary dehumidifier to the indoor
unit’s G thermostat input that will energize G when the auxiliary dehumidifier
InBASIC mode, dehumidification occurs if these conditions are met and sig-
nals are present at specific terminals:
S
S
S
S
dehumidification has been enabled on installer settings, and
the unit is in COOL mode, and
Auxiliary dehumidification is controlled by the thermostat dehumidification
demand.
dehumidification demand exists (RH above setpoint), and
cooling demand exists (Y1 energized).
NOTE − Refer to HCWH Dehumidifier Installation Instructions for installation
recommendations.
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Page 18
Use the Tests / Diagnostics features
NOTE − Test mode lasts for 30 minutes (with the temperature updating every
30 seconds) except for the defrost test, which lasts 30 seconds. Tests fea-
ture provides the technician time to manually verify the equipment operation.
select tests to run
Blower
HP Heat − 1st Stage
HP Heat − 2nd Stage
Cooling − 1st Stage
Cooling − 2nd Stage
Dehumidification
The tests feature is available after setup has been completed once. After
you press next in the final setup screen, the ꢁselect tests to run" screen (fig-
select all
Gas Heat − Minimum Rate
Gas Heat − Maximum Rate
Humidification
sage to ꢁpress Start button below to begin system testing" appears. Press
deselect all
start
skip tests
equipment
diagnostics
setup
tests
alerts
9:39 am Aug 15, 2012
press start button below to begin system testing
Figure 18. Select tests to run screen
start
equipment
tests
diagnostics
setup
alerts
back
current test: Blower
Check Blower Operation
Heating Rate
%
EXIT
9:39 am Aug 15, 2012
Blower CFM Demand
Blower Off Delay
Blower On Delay
Indoor Blower RPM
Indoor Blower Power
Flame Current
1400CFM
Off
Off
Figure 17. Start testing screen
0
0.0000%
0.000mA
No Flame
63ºF
To run all of the tests, press select all. All boxes in the list of tests will be
checked. Or, touch box(es) next to test(s) to run certain tests.
Flame Sense
Outdoor Temperature
After the tests have been started, the screen will describe which test is run-
viewing the results and concluding that no further tests are needed, press
next to proceed to next test. The technician must verify that the test proce-
dure is producing the desired result at the equipment.
cancel
next
9:39 am Aug 15, 2012
Figure 19. Typical tests results screens
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 19
After pressing next after the final test, the ꢁTesting finished" screen will ap-
required setup), or use diagnostics button (to analyze the system), or use
equipment button (if you wish to make any changes to device details).
Set up Equipment parameters
Press equipment to set up equipment parameters and edit details of de-
vices in the system without having to re−run the setup program. When the
modify communicating devices as described earlier in the setup pages, be-
setup
tests
equipment
alerts
diagnostics
example, the low heating airflow is changed from the default (400) to 325 (fig-
fected will appear in red and require changing/saving to clear the red set-
tings.
The Testing Process is finished
press ’tests’ button to run more tests
setup
tests
equipment
alerts
diagnostics
press ’EXIT’ button to start normal operation
press start button below to edit details of devices in the system
start
setup
tests
equipment
EXIT
system devices
about
9:39 am Aug 15, 2012
To adjust a setting,
highlight it, then
press Edit
System
Heat Pump
Furnace
Figure 20. Testing finished screen
Equipment, Alerts, Diagnostics
resetAll
Furnace
Thermostat
Humiditrol
edit
Press equipment if you need to set up equipment parameters and edit de-
tails of devices in the system (see Page 20).
next
9:39 am Aug 15, 2012
Press alerts if you need to run to see any alerts that may present or to view
alerts that have been cleared (see Page 22).
Figure 21. Equipment parameters screen
506920−01 09/12
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ther run tests as before or press skip tests.
setup
tests
equipment
system devices
Equipment Name
Low Heating Airflow
button (if you have completed the required setup), or use diagnostics but-
you want to make any further changes to device details).
current value:
Heating Airflow Control Type
Low Heating Airflow
400
High Heating Airflow
edit
available devices designed to communicate in this system. Other devices
and additional parameters may be added at a later time. Check the unit
installation manuals (i.e. furnace, air handler, heat pump, ac unit) for current
information and default parameters.
High Cooling Airflow
setup
tests
equipment
system devices
Low Heating Airflow
Equipment Name
Heating Airflow Control Type
current value:
Run Diagnostics
Low Heating Airflow
325
High Heating
NOTE −To run diagnostics and insure the system works properly, the system
should be runningꢁset the thermostat so that it will initiate a demand for
cooling, heating, dehumidification, humidification, or continuous fan opera-
tion.
edit
Low Heating Airflow
Range is 325 to 450
Default is 400, inc: 25
High Cooling
Airflow Profil
resetAll
High HP Airf
set−to
Continuous Ind
If you need to run diagnostics to analyze the system, press the diagnostics
Heating Indoor
back
325
save
9:39 am A
Use the arrow buttons to scroll through the list of items found on the left of the
screen. The right side of the screen shows which item is selected. Use start
to begin the process. A ꢁwaiting" message displays while the diagnostics are
cancel
Use the arrow buttons to scroll through the information and take note of any
found to be out of operating range.
Figure 22. Edit equipment details
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 21
Press done when finished with the information. Select another device to
diagnose or use EXIT (to close and go to user Home screen) if finished.
From the user’s home screen, press and hold the ꢁLennox" logo in the bottom
right corner of the thermostat to access the installer program. Press yes
when asked if you want to proceed. The installer screen opens at the ꢁsys-
setup
tests
equipment
alerts
diagnostics
The left side of the "system and device alerts" screen shows a list of each
communicating device discovered in the system and check boxes for select-
ing each device. Or, you may use buttons to the right of the System Devices
list to select all (or deselect all). After something has been selected; use
view active to list all active alerts for selected devices. If there are no alerts,
the display will show ꢁThere are no new alerts that require service". If there
are alerts, these are stored for recall but only one alert will appear in the box
alerts. If only one alert is present, the next button will not appear.
select a device:
Heat Pump
current selection:
Furnace
Furnace
start
Alerts may pop up on the screen during setup. Details of all active alerts can
only be accessed through the installer’s screens. To view all alerts present at
any time, press the alerts button. ꢁSystem setup / Diagnostics is complete"
DIAGNOSTICS
Furnace
Heating Rate
40.0%
Blower CFM Demand
250 CFM
Off
Use view cleared alerts to list previously active alerts that were cleared by
the device or installer. Until at least one alert has been cleared by the device
or the installer, the message ꢁThere are no new alerts that require service"
will be displayed.
Blower Off Delay
Blower On Delay
Indoor Blower RPM
Indoor Blower Power
Flame Current
Off
waiting
waiting
waiting
waiting
Flame Sense
1.
2.
red alert icon
Outdoor Temperature
88.0ºF
yellow alert icon (service)
done
A red alert icon identifies a system or device issue that can prevent the sys-
tem from working properly or at all, and if allowed to run, could cause dam-
age to the system. The issue raised by the alert must be addressed and
corrected before clearing the alert!
9:39 am Aug 15, 2012
Figure 23. Select device and run diagnostics
View and clear Installer Alerts
NOTE −Service alerts remind users to service filters, humidifier pad, UV light and
PureAirt Air Purification system and are not shown in the installer’s menu.
ꢁcleared alerts" file. If an alert cannot be cleared, revisit the alert issue and
make repairs accordingly.
506920−01 09/12
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Page 22
setup
tests
equipment
alerts
diagnostics
setup
tests
equipment
System Devices
System
system and device alerts
No Alerts
Furnace
Thermostat
select all
view active
deselect all
view cleared
back
9:39 am Aug 15, 2012
EXIT
setup
tests
equipment
Figure 25. Cleared alert confirmation
View cleared alerts
alert description
active alerts
ALERT 1 of 5
A history of cleared alerts allows the installer to review cleared alerts. This
information can help diagnose problems. Use the arrows to select either se-
lect all or check an item from the list and then press view cleared alerts.
Then, scroll through the alerts using the next button.
Minor Alert Code: 117
System reports:
(Furnace) Poor Ground detected
clear
Latest Occurrence:
10/25/2011 1:13 pm
2 Occurrences
back
NEXT
First Occurrence:
10/25/2011 12:01 pm
setup
tests
equipment
alert description
9:39 am Aug 15, 2012
ALERT 1 of 5
cleared alerts
Minor Alert Code: 117
System reports:
(Furnace) Poor Ground detected
Figure 24. Selecting and viewing alerts
Latest Occurrence:
10/25/2011 1:13 pm
2 Occurrences
First Occurrence:
10/25/2011 12:01 pm
After all active alerts have been cleared, only the back button remains and
back
next
9:39 am Aug 15, 2012
Figure 26. Cleared alerts screen
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 23
Enable the thermostat’s Wi-Fi feature from the Home screen
Secure Connection Recommended!
network security key or passphrase
press any line to edit it
network name (SSID)
none
WEP
5.2
Make sure the router is capable of, and set to operate in
wireless network ꢁb" mode. Check router utility program or
contact service provider for help. A secure wireless net-
work is recommended over an open (unsecured) network.
You will need the homeowner’s approval and router pass-
word to enable Wi−Fi in a secured connection.
displays information here as keys pressed
security
is WPA2
press here to enter network name
6
6
5.2
a
press here to enter Wi−Fi AP (router) password
WPA
password
WPA2
Enable Wi−FiꢁTo enable the Wi−Fi feature to com-
municate with a wireless router:
7 END
connect
1. Press and release ꢁWi−Fi" in the lower left corner of
the HOME screen (see START HERE). The screen
changes from the Home Screen to the WI−FI SET-
TINGS screen.
type the network security key or passphrase for
(locked Wi−Fi Access Point [AP])
press here to enter Wi−Fi AP (router) password
6
WI−FI SETTINGS
2. Press the Wi−Fi enable button.
3. Press next as necessary; then press accept after
reading the User Agreement.
7 END
connect
NETWORKꢀSETTINGS
4. Press NETWORK SETTINGS; this screen shows a
graphical view of buttons representing Wi−Fi options
OPEN and SECURE wireless networks and a button
for creating a new access point (AP).
Wi−Fi
disable
5.1
7 END
5.0
5.2
5.0 UNSECU-
RED ACCESS
POINT
5.1 SECURE
Access Points
5. Decide which of the following buttons you need to
select:
5?
5.0ꢀOPEN Wi−Fi Port (no password required).
5.1ꢀSECURE Ports (requires router password).
5.2ꢀCreate new AP (Access Point).
5.2 CREATE NEW AP
5.2aꢀWhen creating a new AP, you have the option
of selecting a security level (default is none; choose
from WEP, WPA, WPA2, depending on the security
defined in the homeowner’s router); the password
field appears.
User Agreement
1
WI−FI SETTINGS
next...
next...
START
HERE
Wi−Fi
4
3
6. When you touch in one of the input fields (press here
to enter...), the keyboard tool appears. Enter pass-
word (if simply logging into an existing network) or
enter the network name if creating a new AP. If you
mistype the password or if you cannot access the
selected network, a message will alert you to retry.
7. Press connect to complete the connection. Note
that ꢁWi−Fi enable" button on the Wi−Fi SETTINGS
screen changes to ꢁWi−Fi disable".
Wi−Fi
enable
NETWORK
SETTINGS
accept
decline
2
1
Figure 27. Wi−Fi setup
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NOTE − Time from pushing the registration button on the thermostat and re-
ceiving the consumer portal register link from your email on your computer is
from 5 to 15 minutes.
Registering the icomfort Wi-Fit thermostat
From NETWORK SETTINGS screen, you can change to the desired net-
WI−FI SETTINGS screen.
After registration has been completed, any available firmware downloads
will immediately start downloading to the thermostat.
REGISTRATION
NOTE NETWORK’s marked with * - Selecting one of these
wireless networks may result in an unreliable connection to
your thermostat. Press help ꢀ?" for tips on improving signal
strength.
Register with iComfort thermostat to enable remote access and
online weather information
choose a wireless network
(returns to
WI−FI SETTINGS
screen)
NETGEAR
NETWKB
NETWKC
NETWKD *
enter your email
re−enter your email
System Desc
type the network security key or passphrase for
NETGEAR
register
ew
rk
WI−FI SETTINGS
(returns to
HOME
screen)
AP Info
dis−
connect
thermostat
not
registered
Firmware
update
auto
Wi−Fi
enabled
connected
press to
change network
settings
press to enable
/ disable Wi−Fi
press to change
thermostat regis- ware update between
tration ꢁauto" and ꢁoff"
press to toggle firm-
Figure 28. Change Networks
Registration for online access
From the WI−FI SETTINGS screen, press the ꢁthermostat not registered"
NOTE −
If any downloads are available for the thermostat they will start downloading
right away. When new firmware is being downloaded or when Gelaskins are
being installed, the thermostat screen will temporarily go blank and running
units may cease operation while the system is being reset to accommodate
the new changes. This is normal and can last a couple minutes.
Enter homeowner email address twice and press the register button.
A pop up screen then appears to notify the user to check their home comput-
er for instructions to complete the registration. After the server sends the
email with the network link, registration and account creation must be com-
pleted on the homeowner’s personal computer (see Page 26).
Figure 29. Registering the system for online access
For any issues with Wi−Fi connections, refer to Wi−Fi Troubleshooting
Checklist 507037−01.
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 25
Personal Computer account registration for icomfort Wi-Fit server
NOTE − This following information is customer setup in-
structions and is shown here to allow the installer to help
walk the customer through the setup process.
After registering through your icomfortWi-Fit thermostat in-
terface, go to the homeowner’s computer and locate the
email sent from the server:
Dear Customer,
Congratulations on your purchase of a Lennox icomfort ther-
mostat! You are only a few steps away from total control of
your Lennox icomfort system. Registering your thermostat
will allow you to remotely access it from anywhere in the
world on any device with an internet connection. Please com-
plete your Lennox icomfort registration by clicking the link be-
low:
Register
NOTE − if the customer has already setup an account,
click the ꢀClick Here" button to access that account.
Click on the Register link; the screen (to the left) will appear.
Fill in the User Name and Password fields and check the
agree to terms and conditions box. ClickCreate User button.
A series of pages and prompts follows to provide guidance
through profile setup and user preference definitions.
Figure 30. icomfort Wi-Fit Registration screen
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Page 26
Personal Computer Welcome page; Interactive Demo; Online icomfort information; Using Gelaskins
Welcome home.
®
Access all the great Wi−Fi enabled features on your icomfort thermostat
from our secure web portal. After signing in, you´ll be able to view your icom-
fort system settings, adjust the temperature and view reminders and alerts ˘
just as you would on your icomfortWi-Fit thermostat at home. With a famil-
iar look and settings this simple, you should feel right at home. Don´t forget to
check out the available Apps and customizable skins using the links on the
right side of the page. From the welcome page, you may also click on links to
launch an interactive demo or learn more abouticomfort Wi-Fit.
How Do I Turn on Skins on the icomfort Wi-Fit Thermostat?
From the thermostat Home screen, press then display setting then
power save buttons. From the pop−up menu, select skins. The skin picture
will appear after 30 seconds of inactivity.
How Do I Upload a Skin?
dering the skin, Gelaskins will email the image file (.jpg) to the homeowner.
This ꢁ.jpg" has been altered to display correctly on the icomfortWi-Fit Ther-
mostat. Images can be uploaded to the icomfortWi-Fit thermostat from the
Figure 31. PC Welcome Screen
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 27
Access installer program from Home screen
To access the installer program after the unit has been placed in operation
and the user home screen is displayed, press the ꢁLennox" logo and hold for
A message screen stating ꢁQualified Lennox equipment installer warning"
screen).
WARNING!
away
outdoor
temperature
The following screens are intended for use by qualified Lennox
equipment installers only.
mode
indoor temperature
set temp
heat
or
cool
80
75
Do you want to proceed?
cool−to
yes
no
fan is
AUTO
72
AOUFTFO
heat to
indoor humidity is 41%
Figure 33. Qualified Lennox equipment installer warning
system is cooling
When you press yes, the thermostat’s processor will search for communi-
cating devices in the system. The next display will be a summary of all alerts
9:39 am Aug 15, 2012
Wi−Fi
After initial installation, if an alert is present when you are making changes to
settings, no action on the alert is mandatory.
Figure 32. Enter installation setup mode from home screen
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Page 28
Reconfigure a system
If any component of the HVAC system has been changed, e.g. replacing an
outdoor sensor, reconfiguring the system will be required. To begin reconfi-
guring a system (after you have accessed the program from the Lennox logo
minder notes that system configuration may affect some existing device set-
tings and prompts to confirm or cancel the configuration process.
will change to the system discovery screen. At this point, the program goes
through the same setup as the initial setup process which begins on
NOTE − ꢀCompatible device found" screen (shown below) appears only
when a device has been removed and replaced with a compatible device.
Missing
Found Compatible
Device Equipment Type No.
Model No. (control model no.)
Serial No. (control serial no.)
Device Equipment Type No.
Model No. (control model no.)
Serial No. (control serial no.)
Settings were not copied
setup
tests
equipment
alerts
diagnostics
system and device alerts
Select Devices
System
setup
tests
equipment
alerts
setup
press start button only if you w
diagnostics
tests
Furnace
Thermostat
equipment
alerts
diagnostics
or to re−setup an e
configuring the system may effect some devices.
2
confirm to continue or press cancel
start
3
confirm
cancel
9:39 am Aug 15, 2012
9:39 am Aug 15, 2012
EXIT
9:39 am Aug 15, 2012
Figure 34. Re−configuration process
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 29
Stage Delay & Differential Settings (Installer settings)
1st Stage Differential1ꢀStage 1 differential is used in all thermostats. The
default is 1.0°F but can be programmed between 0.5° and 3.0°F in 0.5°F in-
crements.
previous stage of heating or cooling will not raise or lower the room tempera-
ture to the setpoint in a given time.
When Disabled is selected all stage delay timers are disabled. This means
stages are changed based on the temperature and not their timer delays.
From the equipment button, use the arrows to select 1st Stage Differential.
Press edit. Use the up/down arrows to adjust to the desired setting and
press save.
NOTE − The 2nd Stage Delay Timer (when Staged Delay Timers is Enabled)
is used for both HEATING and COOLING. However, if the system has a vari-
able capacity furnace, 2nd Stage Delay Timer will only be used for COOL-
ING (not for heating, as the variable capacity algorithm ignores delay tim-
ers).
2nd Stage Differential (where applicable)2ꢀThe default is 1.0°F but can be
programmed between 0.5° and 8.0°F in 0.5°F increments.
3rd Stage Differential through 6th Stage Differential (where applica-
ble)3ꢀThe default is 0.5°F but can be programmed between 0.5°F and
8.0°F in 0.5°F increments.
2nd thru 6th Stage Delay timer (where applicable)5ꢀIf Staged Delay Tim-
ers are Enabled, the default delay is 20 minutes but can be programmed
from 5 to 120 minutes in 5−minute increments. If first stage fails to advance
the ambient temperature toward the setpoint by 1.0°F in the programmed
delay time, then the second stage is activated.
NOTE − Each stage’s differential is based on the previous stage’s differential
endpoint. For example, in cooling mode, if stage 1 differential is set to 1.0ºF,
then the system comes on 0.5ºF above setpoint and the 2nd differential
starts at the 0.5ºF stage 1 endpoint and extends to 2nd stage differential end-
point.
Heat Cool Stages Locked In6ꢀdefault Disabled (heat/cool stages are
turned off separately). If changed to Enabled, heat/cool stages are turned off
together. Scroll to Heat Cool Stages Locked In; press edit. Use arrows to
select between Disabled or Enabled. Press save.
NOTE − In normal operation, the end of the cooling demand is at the setpoint
−0.5ºF and the end of the heating demand is at the setpoint +0.5ºF.
Lock In 2nd stage HP by Outdoor Temp7ꢀdefault Off (heat pump stage 2
operates normally). Use this setting to lock in the 2nd stage compressor
when the outdoor temperature is at or less than the LOCK TEMP setpoint.
Scroll to Lock In 2nd stage HP by Outdoor Temp; press edit. Use arrows to
select a temperature between 40 and 55ºF. Press save.
Staged Delay Timers4ꢀdefault Enabled. When ON, all stage delay timers
(stages 2 through 6) are enabled and will serve to bring on additional stage(s)
of cooling or heating on a timed basis (default 20 minutes) in cases when the
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Smooth Setback Recovery (SSR)
SSR is an algorithm designed to ꢁsmoothly" reach a occupied program
schedule setpoint. The algorithm looks 2 hours ahead for the occupied pro-
gram schedule period’s setpoint. If the occupied setpoint requires the sys-
tem to turn on (present temperature below the heat setpoint or above the
cool setpoint), then SSR will calculate a new setpoint. Once initiated, SSR
monitors the change in room temperature and calculates a new setpoint ev-
ery 30 seconds. Then SSR provides this new setpoint for the heating and
cooling algorithms; the new setpoint will be displayed on the User Interface.
Rules for SSR:
1. SSR is enabled when ꢁSmooth Setback Recovery" is set to enabled
and the program schedule is turned on.
2. When SSR is enabled, then it will check for a new setpoint every 30
seconds.
3. The SSR Target Program Schedule setpoint is always 2 hours ahead.
4. When SSR starts, then the Current SSR setpoint will equal the current
program schedule setpoint.
5. When a new program schedule period starts, then the New SSR set-
point will equal the new program schedule period’s setpoint, unless
there are two or more program periods within the 2 hour window. In this
case, SSR will track the highest heat setpoint or the lowest cool set-
point found in the 2 hour window.
6. SSR will NOT run during a program schedule HOLD.
7. SSR does NOT look at the current temperature.
8. If the target program heat setpoint is lower than the Current SSR heat
setpoint, then the New SSR Heat Setpoint will equal the Current SSR
Setpoint.
9. If the target program cool setpoint is higher than the Current SSR cool
setpoint, then the New SSR Cool Setpoint will equal the Current SSR
Setpoint.
10. The New SSR Setpoint will be displayed on the User Interface.
11. SSR does NOT control the equipment.
12. SSR does NOT turn off Stage Delay Timers.
13. SSR does NOT round the newly rounded setpoint, but the setpoint
shown on the user interface is rounded.
14. SSR will NOT change the Temperature Dead band.
15. SSR will not adjust a setpoint to violate the Temperature Dead band.
16. SSR will not overshoot the Target Setpoint.
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Heat Pump, Dual Fuel and Balance Points
IMPORTANT − The Balance Points feature requires that a sensed out-
door temperature is provided to the thermostat. This can be either a
connection to Wi−Fi (for local temperature information) or a connection
to an outdoor sensor (included in all communicating icomfortt−en-
abled heat pumps; optional outdoor temperature sensor X2658 for
non−communicating heat pumps).
pump is not as effective at a lower outdoor temperatures, it may be more
comfortable to use the auxiliary electric heat or the furnace (in dual fuel sys-
tems, it may be more economical) to satisfy a demand for heat. The low bal-
ance point options are from −20°F to the high balance point temperature. The
setpoint can be adjusted in 1.0°F steps.
High Balance Point
If the outside temperature is above the programmed high balance point (set
by default at 50°F), auxiliary electric heat operation or furnace operation (in
dual fuel system) is not allowed. This ensures that the lower cost heat pump
operation will satisfy the heating demand, rather that the more expensive
auxiliary electric heat. The high and low balance points will not lock out both
compressor heat and auxiliary heat/furnace at the same time.
Heat Pump Balance Points
The LOW and HIGH setpoints may be controlled by the icomfortWi-Fit ther-
mostat using the LOW and HIGH Balance Points feature. To enable the Bal-
ance Points feature, go to the installer section equipment button. Scroll
down to the ꢁSystem" screen, select edit and scroll down to Balance Points
Controls. Use arrows to select Enabled and then press save. See the flow-
system operation.
Dual Fuel Applications (Communicating Systems Only)
Dual fuel applications, which include both a Heat Pump and a gas furnace,
will provide multiple stages of heating. For example, a two−stage heat pump
would deliver two stages of heat. The gas furnace can add two to four more
stages of heat. Figure 35 flow chart illustrates Dual Fuel operation with Bal-
ance Points.
Low Balance Point
If the outside temperature is below the programmed low balance point (set
by default at 25°F), compressor operation is not allowed. Since the heat
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Shut down HP
Stg 1...Stg 2
Abbreviations:
FURN = auxiliary heat provided by gas furnace
HP = compressor heat
NO
T’stat
LBP = Low Balance Point
HBP = High Balance Point
T’stat = thermostat
YES
heat
demand
?
FURN
heat
lockout
NOTE 1 − Each Heat Pump and Furnace Heat stage will oper-
ate until it meets the demand or until its stage timer lapses (20
minutes by default). If the timer lapses before the demand is
met, the system brings on the next stage in order of:
HP−stg−1, HP−stg−2, FURN−stg−1, FURN−stg−2.
Operate HP
Stg 1...Stg 2
at
HP stage(s) operate first;
then FURN stage(s) (if
needed; see NOTE 1)
NOTE 2 − The chart below illustrates how the balance points
control whether HP or FURN will operate to provide heat.
or above
HBP
if
outdoor
temperature
is...
T’stat
heat
demand
?
between
HBP and LBP
Operate HP
Stg 1...Stg 2
YES
(See NOTE 2)
COMPRESSOR ONLY
HBP − FURNACE
at or
below
LBP
50ºF
LOCKOUT TEMPERATURE
T’stat
heat
demand
?
YES
EITHER COMPRESSOR
OR FURN HEAT
NO
LBP − COMPRESSOR
LOCKOUT TEMPERATURE
25ºF
Operate FURN
Stg 1...Stg 2
FURN ONLY
Operate FURN
Stg 1...Stg 2
T’stat
heat
demand
?
NO
Heat
pump
lockout
YES
NOTE 3 − If emergency heat is selected, Furnace is used.
T’stat
heat
YES
demand
?
Shut down FURN
Stg1...Stg 2
NO
Figure 35. Dual Fuel Operation with Balance Points
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Gas Heat Control Mode
Increase firing
rate to 100%
until thermostat
demand is
Differential
less than 2nd stage
differential
Differential
less than 3rd stage
differential
?
Differential
less than 4th stage
differential
?
THERMOSTAT
DEMAND
NO
NO
NO
?
satisfied
YES
YES
YES
Increase firing rate
to calculated 2nd
stage firing rate
Increase firing rate
to calculated 3rd
stage firing rate
Starting firing rate
as determined by
variable capacity
algorithm (35 to
100%)
SYSTEM
IDLE
T’stat
demand sat−
isfied in less than
5 minutes
?
T’stat
demand sat−
isfied in less than
5 minutes
?
Differential
less than 2nd stage
differential
YES
YES
NO
?
NO
NO
YES
Differential
less than 4th stage
Differential
less than 3rd stage
differential
?
Continue at
starting firing rate
NO
NO
differential
?
YES
YES
T’stat
demand
satisfied
?
Firing rate
increased by
5% every 5
minutes up to
100% firing rate
Firing rate
increased by
5% every 5
minutes up to
100% firing rate
NO
YES
T’stat
demand
satisfied
?
T’stat
demand
satisfied
?
NO
NO
YES
YES
Figure 36. Variable Capacity Operation Flow Chart
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The thermostat monitors room temperature, previous heat cycle times, and
target setpoint to determine the starting firing rate, and any required firing
rate increases or decreases during the thermostat demand.
Variable Capacity Control of Gas Heat Mode
(G71MPP and SLP98V)
The thermostat includes a feature that provides variable capacity control of
the gas heat mode. The purpose of variable capacity control is to keep the
room temperature at, or near, the desired setpoint with minimum system
cycling. The thermostat bases its ꢁdecisions" for furnace operation control
using the following inputs:
During a heat demand, the icomfort thermostat monitors the differential be-
tween setpoint and room temp. As this differential increases and reaches
field adjustable levels (stages), the thermostat will increase firing rate ac-
cordingly to maintain room temperature and ultimately satisfy the heat de-
mand. On the next heat cycle, the icomfort stat will calculate a new starting
firing rate (in 1% increments) with the goal of maintaining room temperature
at, or near, thermostat setpoint with a minimum of system cycling. The prin-
S
S
Room temperature,
History of cycle times (how long does it typically take to bring the room
temperature to the desired setpoint),
S
S
Target setpoint, and
Differential temperature settings between 1st − 4th stage.
Table 2. Variable Capacity Furnace Operation
The thermostat uses this information to vary the heating capacity to efficient-
ly satisfy the heating demand. The full range of the furnace heating capacity
(low end is a percent of the 1st stage capacity; high range is 100% of full
capacity) is used. When in variable capacity gas heat mode, the furnace op-
eration includes longer run times at lower heat stages.
T’stat Demands
Operation
None
Furnace is off
First level heat de-
mand.
1. Furnace BTU rate is calculated by the icomfort integrating al-
gorithm.
2. Furnace firing rate will continue at current heating rate until
first stage demand is satisfied or an additional thermostat de-
mand is received.
Staged operation
Second level heat
demand added
1. Thermostat will immediately increase variable capacity fur-
nace firing rate to the calculated BTU percentage represent-
ing the second stage thermostat demand.
Some furnaces can be configured to provide up to four stages of gas heat
operation. When staged heating is chosen, the icomfort thermostat allows
you to choose between 1, 2, 3 and 4 stages of heat.
2. Furnace firing rate will increase by 5% every 5 minutes (up to
100% if second stage thermostat is not satisfied.) If thermo-
stat second stage demand is satisfied the current firing rate
will continue until all thermostat demands are satisfied.
Single−stage heat: 1st stage provides 100% of full capacity.
Two−stage heat: 1st stage provides 70% of full capacity; 2nd stage
provides 100% of full capacity.
Third level heat de-
mand added.
1. Thermostat will immediately increase variable capacity fur-
nace firing rate to the calculated BTU percentage represent-
ing the third stage thermostat demand.
Three−stage heat: 1st stage provides 60% of full capacity; 2nd stage
provides 80% of full capacity; 3rd stage provides 100% of full capacity.
Four−stage heat: 1st stage provides 35 or 40% of full capacity; 2nd
stage provides 60% of full capacity; 3rd stage provides 80% of full ca-
pacity; 4th stage provides 100% of full capacity.
2. Thermostat will increase the firing rate by 5% every 5 minutes
(up to 100% if third stage thermostat is not satisfied.) If ther-
mostat third stage demand is satisfied the current firing rate
will continue until all thermostat demands are satisfied.
Fourth level heat de-
mand added.
Icomfort thermostat will immediately set variable capacity
furnace firing rate to 100% until all thermostat demands are
satisfied.
SLP98 variable capacity furnaces BTU’s firing rates can be incremented by
as little as 1% (35% to 100% range available) as the thermostat may dictate.
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Interesting points about the Proportional Integral Algorithm
(PIA):
Load−trackingVariable Capacity FAQs
(SLP98V only)
What is Load−tracking Variable Capacity? When an SLP98 Furnace is
connected to an icomfort Wi−Fit thermostat, the thermostat takes complete
charge of the variable capacity staging of the furnace. Load−tracking Vari-
able Capacity is only available with icomfort Wi−Fi thermostats.
S
S
S
S
S
S
The further temperature is from the current set point, the higher PIA
sets the heating rate.
The longer away from a programmed set point, the higher the heating
rate.
How is Load−tracking Variable Capacity different from Variable Ca-
pacity? Load−tracking Variable Capacity will smoothly track the load (sensi-
ble temperature changes) up and down and adjust the furnace heating rate
both ways. Variable capacity only tracks the load upward (rising tempera-
ture). Variable capacity uses the thermostats stage differentials but not
stage timers. LVC disregards both stage differentials and stage timers.
If needed, PIA will turn heating on and off in short cycles when there
is a heat demand that is lower than the lowest the furnace can provide.
If the heat demand is higher than the minimum the furnace can provide,
the furnace will run without shutting off.
As the room temperature rises nearer the set point, the heating rate will
decrease.
What makes Load−tracking Variable Capacity work? With icomfort
t
As the room temperature falls further away from the set point, the heat-
ing rate will increase.
Load−trackingVariable Capacity, the thermostat uses a Proportional Integral
Algorithm (PIA) to control firing rates of the furnace. The algorithm in the
Load−tracking Variable Capacity provides much more precise control over
the furnace than the Variable Capacity algorithm.
S
S
The stage differentials have no effect when running the PIA.
The second stage timers have no effect when running the PIA.
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Table 3. Adjustable Parameters Table (Installer)
Parameter Name:
Default
Parameter Value Setting
Increment
Installer entry
System (Go to equipment button and scroll to System) NOTE − All of the following changes are made on the stat.
Equipment Name
ꢀ
Calendar Time
Calendar Time
Calendar Time
Calendar Time
Calendar Time
Enabled
5ºF
(keyboard input screen)
Calendar Time, Run Time
Calendar Time, Run Time
Calendar Time, Run Time
Calendar Time, Run Time
Calendar Time, Run Time
Enabled, Disabled
3 to 9ºF
ꢀ
ꢀ
Filter 1 Timer Selection
Filter 2 Timer Selection
UV Bulb Timer Selection
Humidifier Pad Timer Selection
PureAirt Timer Selection
Smooth Setback Recovery
Auto Changeover − Temp Deadband
Electric Heat Control Mode
Gas Heat Control Mode: (SLP98, G71MPP)
(SL280, EL296)
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
1ºF
ꢀ
Standard
Load Tracking
Staged
Standard, Even Heat
Load Tracking Variable Capacity, Variable Capacity, Staged
Staged only
ꢀ
ꢀ
Max Heat Setpoint
90ºF
40 to 90ºF
1ºF
1ºF
ꢀ
Min Cool Setpoint
60ºF
60 to 99ºF
Heat Cool Stages Locked In
*1st Stage Differential
*2nd Stage Differential
*3rd Stage Differential
*4th Stage Differential
*5th Stage Differential
*6th Stage Differential
Stage Delay Timers
Disabled
1.0ºF
Enabled, Disabled
0.5 to 3ºF
0.5ºF
0.5ºF
0.5ºF
0.5ºF
0.5ºF
0.5ºF
ꢀ
1.0ºF
0.5 to 8ºF
0.5ºF
0.5 to 8ºF
0.5ºF
0.5 to 8ºF
0.5ºF
0.5 to 8ºF
0.5ºF
0.5 to 8ºF
Enabled
20 Minutes
20 Minutes
20 Minutes
20 Minutes
20 Minutes
Enabled, Disabled
5 to 120 Minutes
5 to 120 Minutes
5 to 120 Minutes
5 to 120 Minutes
5 to 120 Minutes
*2nd Stage Delay
5 Min
5 Min
5 Min
5 Min
5 Min
*3rd Stage Delay
*4th Stage Delay
*5th Stage Delay
*6th Stage Delay
*Number of stages shown in thermostat is dependent on equipment that is installed. Electric heat will bring on 2 elements at a time if available.
table continued on next page
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Parameter Name:
Lock in 2nd stage HP by Outdoor Temp
Balance Point Control
Default
Off
Parameter Value Setting
Off, 40ºF (4ºC), 45ºF (7ºC), 50ºF (10ºC), 55ºF (13ºC)
Enabled, Disabled
Increment
Installer entry
ꢀ
ꢀ
Disabled
Maximum
50ºF
Humiditrol Comfort Adjust
High Balance Point
Maximum, Midpoint, Minimum Overcooling
−17ºF to 75ºF
ꢀ
1ºF
1ºF
1ºF
Low Balance Point Control
Defrost Target Discharge Temp
25ºF
−20ºF to 72ºF
55ºF
50ºF to 60ºF
Display Only, Basic, Precision (only available when
NO dehumidifier is installed)
Dehumidification Control Mode
Humidification Control Mode
Display Only
Display Only
ꢀ
ꢀ
Display Only, Basic, Precision, Basic Dew Point Con-
trol, Precision Dew Point Control
Autochangeover Humidification Deadband
Max Humidification Setpoint
5%
45%
40%
40%
50%
0
5% to 10%
15% to 45%
40% to 60%
40% to 60%
45% to 60%
−10ºF to 10ºF
1%
1%
1%
1%
1%
1%
Min Dehumidification Setpoint
Max Dehumidification Setpoint
OK/Humid Boundary
Outdoor Temperature Reading Calibration
OUTDOOREQUIPMENT (Go to EQUIPMENT button and scroll to HEAT PUMP or AIR CONDITIONER.)
Equipment Name (HP & AC)
Outdoor Unit
300 Seconds
On
(keyboard input screen = up to 35 characters in string)
ꢀ
60 Sec
ꢀ
Compressor Short Cycle Delay (HP and AC)
Compressor Shift Delay On/Off (HP only)
Defrost Termination Temp (HP only)
60 to 300 Seconds
On, Off
50ºF
50ºF to 100ºF
10ºF
table continued on next page
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Parameter Name:
Default
Parameter Value Setting
Increment
Installer entry
AIR HANDLER
Equipment Name
Air Handler
(keyboard input screen)
ꢀ
Electric Heating Airflow
Low Cooling Airflow
High Cooling Airflow
5CFM
5CFM
5CFM
nnnn CFM
(See Note 3 at
end of table)
NOTE: CFM Default and Values Settings are depen-
dent on the tonnage of the unit
1: No Delays,
2: ON: No delays; OFF: 45 sec delay
3: ON: 82%/7.5min; OFF: No delays
4: ON: 50%/30s,82%/7.5min; OFF:50%/30s
Cooling Airflow Profile
1
ꢀ
Low Heating Airflow
5CFM
5CFM
nnnn CFM
(See Note 3 at
end of table)
High Heating Airflow
NOTE: CFM Default and Values Settings are depen-
dent on the tonnage of the unit
Continuous Indoor Blower Airflow
Humidification Airflow
10CFM
10CFM
60 to 80% (percentage of reduction of High Cooling
Airflow)
Dehumidification Airflow
70%
1%
Delays:
Heating Indoor Blower OFF
10 sec
0 sec
0 sec
2 sec
45 sec
0 sec
0 to 10 Seconds
0 to 5 Seconds
0 to 30 Seconds
0 to 10 Seconds
0 to 60 Seconds
0 to 30 Seconds
1 sec
1 sec
2 sec
1 sec
5 sec
5 sec
Heating Indoor Blower ON
Cooling Indoor Blower OFF
Cooling Indoor Blower ON
HP Indoor Blower OFF
HP Indoor Blower ON
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Parameter Name
Default
Min.
Max.
Incr.
Dependency
Note
Installer entry
FURNACE
Heating indoor blower OFF delay
Heating indoor blower ON delay
Cooling indoor blower OFF delay
Cooling indoor Blower ON Delay
Heat pump indoor blower OFF delay
Heat pump indoor blower ON delay
Gas Heat Airflow Settings
DIP SW
45 sec
0 sec
60
15
0
180
45
30
10
60
30
10
5
None
None
DIP switch setting in
Non−comm.
45 sec fixed in Non−
Comm. IFC
2
Outdoor Unit
present
Not used on Non
Comm. IFC
2 sec
0
1
Outdoor Unit
present
2 sec fixed in Non−
Comm. IFC
45 sec
0 sec
0
5
Heat Pump present
Not used on Non
Comm. IFC
0
5
Heat Pump present
Not used on Non
Comm. IFC
Heating Airflow Control Type (variable
capacity furnaces only)
0 – Fixed
CFM
0 (Fixed CFM)
1 (Fixed DAT)
0
1
1
DATS installed
Low Heating Airflow (CFM @ min.
heat)
DIP SW
DIP SW
25
25
Heating Airflow
Control Type = 0
High Heating Airflow (CFM @ 100%
heat)
See furnace docu-
mentation (IOM or
engineering hand-
book) for size spe-
cific information
See furnace documen-
tation (IOM or engineer-
ing handbook) for size
specific information
Low Heating Discharge Air
Temperature (DAT @ min heat)
(variable capacity furnaces only)
DIP SW*
DIP SW*
5
5
Heating Airflow
Control Type = 1
High Heating Discharge Air
Temperature (DAT @ 100% heat)
(variable capacity furnaces only)
* − Default DAT value is rounded to the closest number on 5 deg F resolution and limited by Minimum and Maximum value.
table continued on next page
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Parameter Name
Default
Min.
Max.
Incr.
Dependency
Note
Installer entry
Cooling Airflow Settings
High Cooling Airflow (CFM @ 100%
cool)
OU tons
400CFM
Min
CFM
Max
CFM
25
25
25
25
1
Outdoor Unit
present
1/2 HP blower
1 HP blower
1/2 HP blower
1 HP blower
Min
CFM
Max
CFM
Low Cooling Airflow (CFM @ lowest
cool stage)
(See Note 1
at end of
table)
Min
CFM
Max
CFM
2+ stage Outdoor
Unit present
Min
CFM
Max
CFM
0
A:ON:50%/30s,82% /
7.5min OFF:50%/30s
B:ON:82% / 7.5min; OFF:
No delays
Airflow Profile − Cooling
DIP SW
0
3
Outdoor Unit
present
1
2
3
C:ON: No delays; OFF:
45sec delay
D:No delays)
Heat Pump Airflow Settings
High Heat Pump Airflow (CFM @
100%)
OU tons
400CFM
Min
CFM
Max
CFM
25
25
25
25
Heat Pump present
1/2 HP blower
1 HP blower
1/2 HP blower
1 HP blower
Min
CFM
Max
CFM
Low Heat Pump Airflow (CFM @
lowest stage)
(See Note 2
at end of
table)
Min
CFM
Max
CFM
2+ stage Heat Pump
present
Min
CFM
Max
CFM
table continued on next page
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Parameter Name
Other Parameters
Default
Min.
Max.
Incr.
Dependency
Note
Installer entry
Equipment Name
Furnace
N/A
N/A
N/A
25
None
None
Up to 35 characters
1/2 HP blower
Continuous Indoor Blower Airflow
DIP SW (See
Note 3 at
end of table)
Min
CFM
Max
CFM
Min
CFM
Max
CFM
25
25
25
1 HP blower
1/2 HP blower
1 HP blower
Humidification Airflow
Same as
above
Min
CFM
Max
CFM
Humidifier present
Min
CFM
Max
CFM
Dehumidification Airflow Percentage
140
(=70%)
120
(=60%)
160
(=80%)
2
(=1%)
OU present and SC
(Subnet Controller)
algorithm support
Percent of High Cooling
Airflow
Note 1:
Note 2:
Note 3:
Minimum Outdoor Unit Cooling Stage as a percentage of High Cooling Airflow (value is rounded up to the closest number on 25 CFM resolution.
Minimum Outdoor Unit Heating Stage as a percentage of High Heat Pump Airflow (value is rounded up to the closest number on 25 CFM resolution).
All communicating Installer Parameters default CFM values based on DIP switch setting (non−communicating value) are calculated using the CFM conversion
tables and rounded up to closest number on 25 CFM resolution.
Note 4:
Note 5:
Parameter dependency − Certain parameters are dependent on others and may not be shown on the display.
Default Values − Jumper/DIP switches impact the default value of some parameters.
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Table 4. Adjustable Parameters Table (User)
Parameter Name:
Time and Date *
Default
Parameter Value Setting
(Time/date elements screen)
Enabled, Disabled
Increment
Installer entry
ꢀ
Enabled
auto
ꢀ
ꢀ
ꢀ
ꢀ
Daylight Saving Time *
Fan
auto, on, circulate
System Name
ꢀ
(keyboard input screen)
SERVICE INFORMATION
Dealer Number
****
Lennox
ꢀ
(keyboard input screen)
(keyboard input screen)
(keyboard input screen)
(keyboard input screen)
(keyboard input screen)
(keyboard input screen)
English, French, Spanish
(F) Fahrenheit, (C) Celsius
12 Hour, 24 Hour
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
20%
ꢀ
ꢀ
ꢀ
ꢀ
Dealer Name
Dealer Address
Dealer Phone
1−800−9−LENNOX
ꢀ
Dealer Email
Dealer Website
English
(F)
Language Displayed
Temperature Display Scale **
Clock Format
12H
Screen Lock−out
Backlight Setting
Backlight Intensity
Outdoor Temp Display
Indoor Humidity Display
Power Save
Unlocked
Always On
100%
Unlocked, Partially Locked, Fully Locked
Power Save, Always On
20 to 100%
is OFF
is OFF, is ON
is OFF
is OFF, is ON
is ON
is OFF, is ON
Background theme
cobalt
cobalt, cotton, carbon
* Entered during initial installer setup (during initial discovery); should be edited from user preferences.
** When Celsius mode is chosen, Celsius is only changed on home screen; all calculations and other setting are in Fahrenheit.
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Parameter Name:
Filter 1 Timer
Default
Parameter Value Setting
Increment
Installer entry
Disabled, 3 Months, 6 Months, 12 Months,
24 Months, Custom Time
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
ꢀ
Disabled, 3 Months, 6 Months, 12 Months,
24 Months, Custom Time
Filter 1 Timer
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Disabled, 3 Months, 6 Months, 12 Months,
24 Months, Custom Time
Humidifier Pad Timer
UV Bulb Timer
Disabled, 3 Months, 6 Months, 12 Months,
24 Months, Custom Time
Disabled, 3 Months, 6 Months, 12 Months,
24 Months, Custom Time
Maintenance Timer
PureAir Timer
Disabled, 3 Months, 6 Months, 12 Months,
24 Months, Custom Time
THERMOSTAT (Go to equipment button and scroll to Thermostat.)
NOTE − These settings apply to the thermostat’s internal sensors.
Equipment Name
ꢀ
(keyboard input screen)
−5ºF to 5ºF
ꢀ
1ºF
Temp Reading Calibration
Humidity Reading Calibration
0ºF
0%
−10 to 10%
1%RH
506920−01 09/12
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Page 44
Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer
alert button. Minor and Moderate alerts are found only in the Installer alert button.
Table 5. Alert Codes and Troubleshooting
Alert
Code
Priority
Alert Text
Steps to clear
10
Critical
(Stat) The thermostat has found an unknown
device on the system.
An unknown device is seen on the subnet in or outside of configuration mode. Clear by reconfiguring
the system. Press the setup tab, press start, and press confirm. If problem persists, then check all
DEVICE connections to make sure they are icomfort−compatible.
11
12
14
18
Critical
Critical
Critical
Minor
(Stat) The thermostat cannot find a previously
installed unit.
Check all connections and cycle system power. If problem persists, clear by reconfiguring the sys-
tem. Press the setup tab, press start, and press confirm. If problem persists, then check all DEVICE
connections to make sure they are icomfort−compatible.
(Stat) The thermostat cannot find an icomfort−
enabled indoor unit.
Thermostat did not find an Indoor Unit. Make sure there is an icomfort indoor unit on the system.
Check R, i+, i− and C connections, ohm wires and cycle power. Replace indoor unit control board if
there is no response.
(Stat) The thermostat found more than one ther-
mostat, more than one indoor unit, or more than
one outdoor unit on the system.
Check wiring and remove duplicate equipment. Reconfigure system.
(Stat) The outside temperature is below the lev-
el where the heat pump is programmed to heat
the home. The system will not use the heat
pump to warm your home.
Notification only − Outdoor Temp is below the Low Balance Point. Heat Pump will not be used to
service a heating demand.
19
29
30
Minor
(Stat) The outside temperature is higher than
the level where the furnace or electric heat is
programmed to work. The system will only use
the heat pump to warm your home.
Notification only − Outdoor Temp is above the High Balance Point. Indoor Unit (furnace or air−handler)
will not be used to service a heating demand.
Critical
Moderate
(Stat) The thermostat is reading an indoor tem-
perature that is higher than 99ºF. The thermo-
stat will not allow any heating operation to begin
until it senses a temperature lower than 99ºF.
Indoor temperature rose above 99ºF during a heating or cooling demand. Heating operation is not
allowed. Check to ensure that Heating Equipment is not stuck ON (reversing valve, etc.). Check the
accuracy of the thermostat temperature sensor. Select cooling system mode to cool the indoor
space.
(Stat) The thermostat is reading an indoor tem-
perature that is lower than 40ºF. The thermostat
will not allow any cooling operation to begin un-
til it senses a temperature higher than 40ºF.
Indoor Temp fell below 40ºF. Cooling operation is not allowed. Check to ensure that cooling equip-
ment is not stuck ON. Check accuracy of the thermostat temperature sensor. Select heating system
mode to heat the indoor space to above 40ºF.
31
32
Critical
(Stat) The thermostat has lost communication
with the (furnace, air−handler or outdoor unit) for
more than 3 minutes.
[Indicated unit] has not communicated with thermostat for more than 3 minutes. Check connections.
Ohm wires. If fault persists, then cycle power. Fault clears after communication is restored.
Moderate
(Stat) The (furnace, air−handler or outdoor unit)
is resetting itself.
[Indicated unit] is resetting itself. This event may occur during a power outage or power fluctuation in
the system. If persistent or if it coincides with the system operation then proceed with the following
steps. Check the power connections, check the amp draw at the transformer (the transformer maybe
overloaded) and check 24VAC voltage at the DEVICE. The alarm is only cleared by pressing the
clear button on the Installer Alerts Tab. If the fault persists after checking the connections, replace
the unit’s control board.
table continued on next page
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 45
Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer
alert button. Minor and Moderate alerts are found only in the Installer alert button.
Alert
Code
Priority
Alert Text
Steps to clear
34
Critical
(Stat) The thermostat does not know the capac-
ity (tonnage) of the (furnace, air−handler or out-
door unit). Please program the correct capacity
of the (furnace, air−handler or outdoor unit).
[Indicated unit] is missing the programmed unit capacity. Go to [Indicated unit] and program the unit
capacity manually. See the unit IOM for programming instructions. Remove power to thermostat
before programming the unit control board. Once programming is complete, reconnect thermostat
wires and reconfigure system.
36
37
Critical
Critical
Critical
Critical
Critical
(Stat) The system has been heating for at least
15 minutes, without a demand for heating.
Run the system in diagnostic mode and verify that it matches actual equipment operation. Check for
other alarms/codes that may be preventing the system from operating as expected.
Step 1: Check all heating equipment to determine cause of heating demand.
Step 2: Recycle power.
System will clear code when it detects condition has cleared.
(Stat) The system has been cooling for at least
15 minutes, without a demand for cooling.
Run the system in diagnostic mode and verify that it matches actual equipment operation. Check for
other alarms/codes that may be preventing the system from operating as expected.
Step 1: Check all cooling equipment to determine cause of cooling demand.
Step 2: Recycle power.
System will clear code when it detects condition has cleared.
38
(Stat) The system has not been able to turn on
the heating for more than 45 minutes. The sys-
tem will go offline for 60 minutes and try again.
Run the system in diagnostic mode and verify that it matches actual equipment operation. Check for
other alarms/codes that may be preventing the system from operating as expected.
Step 1: Check all heating equipment to determine cause.
Step 2: Recycle power.
System will clear code when it detects condition has cleared.
39
(Stat) The system has not been able to turn on
the cooling for more than 45 minutes. The sys-
tem will go offline for 60 minutes and try again.
Run the system in diagnostic mode and verify that it matches actual equipment operation. Check for
other alarms/codes that may be preventing the system from operating as expected.
Step 1: Check all cooling equipment to determine cause.
Step 2: Recycle power.
System will clear code when it detects condition has cleared.
105
(Stat / Furnace / Air Handler / Outdoor Unit) The
(stat, furnace, air−handler or outdoor unit) has
lost communication with the rest of the system.
Equipment is unable to communicate. This may indicate the existence of other alarms/codes. In
most cases errors are related to electrical noise. Make sure high voltage power is separated from
RSBus. Check for mis−wired and/or loose connections between the stat, indoor unit and outdoor unit.
Check for a high voltage source of noise close to the system. Generally, this is a self−recoverable
error.
110
111
Critical
Critical
(Furnace) The line voltage is too low.
This alarm/code may appear during a brownout. Line voltage is below its designed operating value.
Check and correct the power line voltage.
(Furnace) The line power voltage wiring is re-
versed.
The unit is reporting that its power line and neutral are reversed. Turn off the power to the system and
correct the line power voltage wiring. System resumes normal operation 5 seconds after fault recov-
ered.
112
Critical
(Furnace) The reporting device cannot find
earth ground. The thermostat will shut down the
system.
Provide proper earth ground to the equipment. System resumes normal operation 5 seconds after
fault recovered.
table continued on next page
506920−01 09/12
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Page 46
Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer
alert button. Minor and Moderate alerts are found only in the Installer alert button.
Alert
Code
Priority
Alert Text
Steps to clear
113
Critical
(Furnace) The line voltage is too high.
Line voltage high (voltage higher than nameplate rating). Provide power voltage within proper range.
System resumes normal operation 5 seconds after fault recovered.
114
115
Critical
Critical
(Furnace / Air Handler) There is a frequency/
distortion problem with the power to the (furnace
or air−handler).
This alarm/code may indicate transformer overloading. Check the voltage and line power frequency.
Check the generator operating frequency, if the system is running on back−up power. Correct voltage
and frequency problems. System resumes normal operation 5 seconds after fault recovered.
(Furnace / Air Handler) The 24VAC to the (fur-
nace or air−handler control board) is lower than
the required range of 18 to 30VAC.
24−Volt Power Low (Range is 18 to 30 volts). Check and correct voltage. Check for additional power−
robbing equipment connected to system. This alarm/code may require the installation of an addition-
al or larger VA transformer.
117
120
Minor
(Furnace) The reporting unit has poor earth
grounding.
Provide proper grounding for the unit. Check for proper earth ground to the system. The alarm/code
will clear 30 seconds after it is corrected.
Moderate
(Stat / Furnace / Air Handler / Outdoor Unit)
There is a delay in the (stat, furnace, air−handler
or outdoor unit) responding to the system.
Typically, this alarm/code does not cause any issues and will clear on its own. The alarm/code is
usually caused by a delay in the outdoor unit responding to the thermostat. Check all wiring connec-
tions. Cleared after unresponsive device responds to any inquiry.
124
125
126
Critical
Critical
Critical
(Stat / Furnace / Air Handler / Outdoor Unit) The
thermostat has lost communication with the (fur-
nace, air−handler or outdoor unit) for more than
3 minutes.
Equipment lost communication with the thermostat. Check the wiring connections, ohm wires and
cycle power. The alarm stops all associated HVAC operations and waits for a heartbeat message
from the unit that’s not communicating. The alarm/fault clears after communication is re−established.
(Stat / Furnace / Outdoor Unit) There is a hard-
ware problem on either the (stat, furnace control
board, air−handler control board or outdoor unit
control board).
There is a control hardware problem. Replace the control if the problem prevents operation and is
persistent. The alarm/fault is cleared 300 seconds after the fault recovers.
(Furnace / Outdoor Unit) There is an internal
communication problem with the (furnace con-
trol board, air−handler control board or outdoor
unit control board).
There is an internal hardware problem on the control. Typically the control will re−set itself. Replace
the control if the problem prevents operation and is persistent. The alarm/fault is cleared 300 sec-
onds after the fault recovers.
130
131
Moderate
Critical
(Air Handler) An air−handler configuration jump-
er is missing.
Configuration jumper(s) missing on control (applicable in non−communicating applications only).
Replace the jumper or put wire between terminals on control. Cleared after jumper is connected.
(Stat / Furnace / Air Handler / Outdoor Unit) The
(stat, furnace, air−handler or outdoor unit) con-
trol parameters are corrupted.
Reconfigure the system. Replace the control if heating or cooling is not available.
132
Critical
(Air Handler) The air handler control software is
corrupted.
Recycle power. If failure re−occurs, replace the control. System reset is required to recover.
table continued on next page
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 47
Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer
alert button. Minor and Moderate alerts are found only in the Installer alert button.
Alert
Code
Priority
Alert Text
Steps to clear
180
Critical
(Furnace / Air Handler / Outdoor Unit) The ther-
mostat has found a problem with the (furnace,
air−handler or outdoor unit) outdoor sensor.
In normal operation after control recognizes sensors, the alarm will be sent if valid temperature
reading is lost. Compare outdoor sensor resistance to temperature/resistance charts in unit installa-
tion instructions. Replace sensor pack if necessary. At the beginning of (any) configuration, furnace
or air−handler control will detect the presence of the sensor(s). If detected (reading in range), ap-
propriate feature will be set as ’installed’ and shown in the ’About’ screen. The alarm/fault will clear
upon configuration, or sensing normal values.
200
201
Critical
Critical
(Furnace) The furnace rollout limit switch is
open.
Correct the cause of rollout trip. Reset rollout switch. Reset power to clear. Test the furnace opera-
tion. The alarm/fault clears after the furnace rollout switch is closed.
(Furnace / Air Handler) The system has lost
communication with the (furnace or air−handler)
indoor blower motor.
Lost communication with indoor blower motor. Possible causes include: power outage, brown−out,
motor not powered, loose wiring, condensation on air handler control without cover on breaker.
Problem may be on control or motor side. Cleared after communication is restored.
202
203
Critical
Critical
(Furnace / Air Handler) The unit size code for
the (furnace or air−handler) and the size of blow-
er motor do not match.
Incorrect appliance unit size code selected. Check for proper configuring under Unit Size Codes for
Furnace/Air Handler on configuration guide or in installation instructions. The alarm/fault clears after
the correct match is detected following a reset. Remove the thermostat from the system while apply-
ing power and reprogramming.
(Furnace / Air Handler) The unit size code for
the (furnace or air−handler) has not been se-
lected.
No appliance unit size code selected. Check for proper configuring under: Unit Size Codes for Fur-
nace/Air Handler on configuration guide or in installation instructions. Critical Alert. The alarm/fault
clears after the correct match is detected following a reset. Remove the thermostat from the system
while applying power and reprogramming.
204
205
206
207
223
Critical
Critical
Critical
Critical
Critical
(Furnace) There is a problem with the furnace
gas valve.
Check gas valve operation and wiring. The alarm/fault clears after the issue is corrected.
(Furnace) The furnace gas valve relay contact
is closed.
Check wiring on control and gas valve. The alarm/fault clears after the issue is corrected.
(Furnace) The furnace gas valve 2nd stage
relay is faulty.
Furnace will operate on 1st stage for the remainder of the heating demand. The alarm/fault will clear
after the issue is corrected. If unable to operate 2nd stage, replace control.
(Furnace) The furnace hot surface igniter is
open.
Measure the resistance of hot surface igniter. Replace the it if it is not within the specified range
found in IOM. The alarm/fault clears after the issue is corrected.
(Furnace) The furnace low pressure switch is
open.
Check pressure (inches w.c.) of low pressure switch closing during a heat call. Measure operating
pressure (inches w.c.). Inspect vent and combustion air inducer for correct operation and restriction.
The alarm/fault clears after the issue is corrected.
224
225
Critical
Critical
(Furnace) The furnace low pressure switch is
stuck closed.
Check operation of low pressure switch to see if it is stuck closed for longer than 150 seconds during
a heat call . Measure operating pressure (inches w.c.). Inspect vent and combustion air inducer for
correct operation and restriction. The alarm/fault clears after the issue is corrected.
(Furnace) The furnace high pressure switch is
failing to close.
Check pressure (inches w.c.) of high pressure switch closing during a heat call. Measure operating
pressure (inches w.c.). Inspect vent and combustion air inducer for correct operation and restriction.
The alarm/fault clears after the issue is corrected.
table continued on next page
506920−01 09/12
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Page 48
Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer
alert button. Minor and Moderate alerts are found only in the Installer alert button.
Alert
Code
Priority
Alert Text
Steps to clear
226
Critical
(Furnace) The furnace high pressure switch is
stuck closed.
Check operation of high pressure switch closing during a heat call. Measure operating pressure
(inches w.c.). Inspect vent and combustion air inducer for correct operation and restriction. The
alarm/fault clears after the issue is corrected.
227
228
229
240
Moderate
Moderate
Minor
(Furnace) The furnace low pressure switch is
open in run mode.
Check pressure (inches w.c.) of low pressure switch closing during a heat call. Measure operating
pressure (inches w.c.). Inspect vent and combustion air inducer for correct operation and restriction.
The alarm/fault clears after the issue is corrected.
(Furnace) The furnace control is not able to cali-
brate the pressure switch.
Unable to perform pressure switch calibration. Check vent system and pressure
switch wiring connections. Check the drain trap for blockage. The alarm/fault clears after a success-
ful calibration.
(Furnace) The furnace control has switched to
high fire ignition because the low fire pressure
switch did not close in the allowed time.
IFC switched to high fire ignition because low fire pressure switch did not close in allowed time. No
action is needed.
Moderate
(Furnace) The furnace flame current is low.
Check micro−amperes of the flame sensor using thermostat diagnostics. Clean or replace the flame
sensor. Measure voltage of neutral to ground to ensure good unit ground. The alarm clears after a
proper micro−amp reading has been sensed.
241
250
Critical
(Furnace) The furnace flame is going out while
the furnace is heating.
Shut off gas. Check for a gas valve leak. Replace the gas valve if needed. The alarm/fault will clear
when a heat call ends successfully.
Moderate
(Furnace) The furnace primary limit switch is
open.
Check for proper firing rate on furnace. Ensure there is no blockage in the furnace and the ductwork.
Check for proper air flow. If limit switch is not closed within 3 minutes, the unit will go into 1−hour
Watchguard mode. The alarm/fault will clear when a heat call ends successfully.
252
270
271
Moderate
Critical
(Furnace) The furnace discharge air−tempera-
ture is high.
Check temperature rise, air flow and input rate. Check for dirty filters. The alarm/fault will clear when
a heat call ends successfully.
(Furnace) The furnace is in Watchguard mode.
The furnace igniter cannot turn on the flame.
Check for proper gas flow. Ensure that igniter is lighting burner. Check flame sensor current. Check
for dirty filters. The alarm/fault will clear on successful ignition.
Critical
(Furnace) The furnace is in Watchguard mode.
The furnace low pressure switch is open.
Check pressure (inches w.c.) of low pressure switch closing during a heat call. Measure operating
pressure (inches w.c.). Inspect vent and combustion air inducer for correct operation and restriction.
The alarm/fault will clear on successful ignition.
272
273
274
Critical
Critical
Critical
(Furnace) The furnace is in Watchguard mode.
The furnace low pressure switch is open during
run mode.
Check operation of low pressure switch to see if it is stuck open during a heat call. Measure operat-
ing pressure (inches w.c.). Inspect vent and combustion air inducer for correct operation and restric-
tion. The alarm/fault will clear when a heat call ends successfully.
(Furnace) The furnace is in Watchguard mode.
The furnace flame is going off during a heating
cycle.
Check micro−amperes of flame sensor using thermostat diagnostics. Clean or replace sensor. Mea-
sure voltage of neutral to ground to ensure good unit ground. The alarm/fault will clear when a heat
call ends successfully.
(Furnace) The furnace limit switch has been
open for more than 3 minutes.
The system will go into Watchguard mode. Check firing rate and air flow. Check for blockage. The
alarm/fault will clear when a heat call ends successfully.
table continued on next page
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 49
Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer
alert button. Minor and Moderate alerts are found only in the Installer alert button.
Alert
Code
Priority
Alert Text
Steps to clear
275
Critical
(Furnace) The furnace flame is out of sequence.
The system will go into Watchguard mode. Shut off gas. Check for gas valve leak. The alarm/fault
will clear on next successful ignition.
276
Critical
(Furnace) The furnace is not able to calibrate or
the high pressure switch opened or failed to
close in run mode.
The system will go into Watchguard mode. Check vent system and pressure
switch wiring connections. The fault/alarm will clear when the furnace calibrates itself successfully.
290
291
292
Critical
Critical
Critical
(Furnace) There is a problem with the furnace
ignition circuit.
The system will go into Watchguard mode. Measure resistance of hot surface igniter. Replace the hot
surface ignitor it is not within specifications. The alarm/fault will clear on next successful ignition.
(Furnace) The heating airflow is below the mini-
mum required level.
The system will go into Watchguard mode. Check for dirty filters and other air flow restrictions. Check
blower performance. The alarm/fault will clear when a heat call ends successfully.
(Furnace / Air Handler) The (furnace or air−han-
dler) indoor blower motor will not start.
The system will go into Watchguard mode. Indoor blower motor unable to start. This could be due to
seized bearing, stuck wheel, obstruction etc. Replace motor or wheel if assembly does not operate or
meet performance standards. The alarm/fault clears after the indoor blower motor starts successfully.
294
Critical
(Furnace) There is over current in the furnace
inducer motor.
The system will go into Watchguard mode. Check combustion blower bearings, wiring and amps.
Replace if does not operate or does not meet performance standards. The alarm/fault clears after
inducer current is sensed to be in−range after the ignition following the Watchguard mode or reset.
295
310
Minor
(Furnace) The indoor blower motor is over heat-
ing.
Indoor blower motor over temperature (motor tripped on internal protector). Check motor bearings
and amps. Replace if necessary. The alarm/fault clears after blower demand is satisfied.
Critical
(Furnace / Air Handler) There is a problem with
(furnace or air−handler) discharge air sensor.
Compare outdoor sensor resistance to temperature/resistance charts in installation instructions.
Replace sensor if necessary. The alarm/fault is cleared 30 seconds after fault is detected as recov-
ered.
311
312
Minor
Minor
(Furnace) The heat firing rate has been reduced
to match available airflow (cutback mode).
Warning Only. Furnace blower in cutback mode due to restricted airflow. Reduce firing rate every 60
seconds to match available CFM. Check filter and duct system. To clear, replace filter if needed or
repair/add duct. 2−stage controls will reduce firing rate to 1st stage. The alarm/fault clears when a
heat call finishes successfully.
(Furnace / Air Handler) The blower cannot pro-
vide the requested CFM due to high static.
Warning Only. Restricted airflow − Indoor blower is running at a reduced CFM (Cutback Mode − The
variable speed motor has pre−set speed and torque limiters to protect the motor from damage caused
by operating outside of design parameters (0 to 0.8" e.g.. total external static pressure). Check filter
and duct system. To clear, replace filter if needed or repair/add duct. The alarm/fault is cleared after
the current service demand is satisfied.
313
344
Minor
(Furnace / Air Handler) The indoor and outdoor
unit capacities do not match.
Check for proper configuring in installation instructions. Alarm is just a warning. The system will
operate, but might not meet efficiency and capacity parameters. The alarm will clear after commis-
sioning is complete.
Critical
(Furnace) Relay Y1 Failure
Y1 relay failed; operation stopped. Alarm clears 300 seconds after Y1 input sensed OFF.
table continued on next page
506920−01 09/12
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Page 50
Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer
alert button. Minor and Moderate alerts are found only in the Installer alert button.
Alert
Code
Priority
Alert Text
Steps to clear
345
Critical
(Air Handler) The ꢁO" relay on the air−handler
has failed. Either the pilot relay contacts did not
close or the relay coil did not energize.
O relay / Stage 1 failed. Pilot relay contacts did not close or the relay coil did not energize. Replace
control. Cleared after the fault recovered following reset.
346
347
Critical
Critical
(Air Handler) The heat pump jumper was not
removed on the air−handler control board.
Configuration link(s) not removed on control. Cut O−R. Applicable with non communicating outdoor
unit with communicating indoor system.
(Furnace / Air Handler) The ꢁY1" relay on the
(furnace or air−handler) has failed. Either the
pilot relay contacts did not close or the relay
coil did not energize.
Operation stopped. Y1 relay / Stage 1 failed. (Pilot relay contacts did not close or
the relay coil did not energize; no input back to IFC chip). Critical Alert. Cleared after reset and Y1
input sensed.
348
Critical
(Furnace / Air Handler) The ꢁY2" relay on the
(furnace or air−handler) has failed. Either the
pilot relay contacts did not close or the relay
coil did not energize.
Y2 relay / Stage 2 failed. (Pilot relay contacts did not close or the relay coil did not energize; no input
back to IFC chip). Critical Alert. Cleared after reset and Y1 input sensed.
349
350
Critical
Critical
(Furnace) The ꢁO" to ꢁR" jumper on the furnace
needs to be restored.
Configuration link R to O needs to be restored. Replace link or hard−wire. Applicable in non commu-
nicating mode. Critical Alert.
(Air Handler) The air−handler’s electric heat is
not configured.
Heat call with no configured or mis−configured electric heat. Check for proper configuring under
Configuring Electric Heat Stages in the air handler installation instructions. Cleared after electrical
heat detection is successful.
351
352
Critical
Critical
(Air Handler) There is a problem with the air−
handler’s 1st stage electric heat. Either the pilot
relay contacts did not close, or the relay coil in
the electric heat section did not energize.
Heat section / Stage 1 failed. (Pilot relay contacts did not close, or the relay coil in the electric heat
section did not energize.) Air handler will operate on 1st stage for reminder of the heat call. Will clear
after fault recovered.
(Air Handler) There is a problem with the air−
handler’s 2nd stage electric heat. Either the pi-
lot relay contacts did not close, or the relay coil
in the electric heat section did not energize. The
air−handler will operate on 1st stage electric
heat until the issue is resolved.
Heat section / Stage 2 failed (Same as Code 351).
Heat section / Stage 3 failed (Same as Code 351).
table continued on next page
353
Critical
(Air Handler) There is a problem with the air−
handler’s 3rd stage electric heat. Either the pilot
relay contacts did not close, or the relay coil in
the electric heat section did not energize. The
air−handler will operate on 1st stage electric
heat until the issue is resolved.
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 51
Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer
alert button. Minor and Moderate alerts are found only in the Installer alert button.
Alert
Code
Priority
Alert Text
Steps to clear
354
Critical
(Air Handler) There is a problem with the air−
handler’s 4th stage electric heat. Either the pilot
relay contacts did not close, or the relay coil in
the electric heat section did not energize. The
air−handler will operate on 1st stage electric
heat until the issue is resolved.
Heat section / Stage 4 failed (Same as Code 351).
355
Critical
(Air Handler) There is a problem with the air−
handler’s 5th stage electric heat. Either the pilot
relay contacts did not close, or the relay coil in
the electric heat section did not energize. The
air−handler will operate on 1st stage electric
heat until the issue is resolved.
Heat section / Stage 5 failed (Same as Code 351).
370
400
401
Critical
(Furnace) The furnace control board has not
received 24VAC power for 2 minutes or more.
Control sees the loss of 24VAC for 2 minutes .Terminate all services and wait for interlock switch to
close. The alarm will clear when 24VAC is continuously sensed on DS terminal for a minimum of 10
seconds or on a power reset. If 2 stage with float switch, the IFC control R−DS is open.
Critical
(Outdoor Unit) The compressor internal over-
load has tripped.
Thermostat demand Y1 is present; but, compressor is not running. Check power to unit. Clears the
error after current is sensed in both RUN and START sensors for at least 2 seconds, or after service
is removed, or after power reset.
Moderate
(Outdoor Unit) Either the compressor ran for
more than 18 hours continuously trying to cool
the home or the refrigerant pressure in the sys-
tem is low.
Compressor ran more than 18 hours to satisfy a single thermostat demand. Will not lockout system.
if 2 stage, units with blinking LED light controls, unit will run in low speed; units with 7−segment
display will display code, but continue to run in high speed. If a Heat Pump, and if outdoor temp is
less than 65 degrees, code is ignored. Clears the error after 30 consecutive normal run cycles or
power reset. Also monitors low pressure switch trips.
402
Critical
(Outdoor Unit) Either the discharge or suction
pressure level is out−of−limits, or the is compres-
sor overloaded.
Discharge or suction pressure out−of−limits, or compressor overloaded. Clears the error after 4 con-
secutive normal compressor run cycles.
403
404
Moderate
Critical
(Outdoor Unit) The compressor ran for less than
3 minutes to satisfy a thermostat demand.
Compressor runs less than 3 minutes to satisfy a thermostat demand. Clears the
error after 4 consecutive normal run cycles or power reset.
(Outdoor Unit) The compressor rotor is locked
up. This could be due to a short circuiting of the
run capacitor, seizing of the bearings or exces-
sive liquid refrigerant etc.
Compressor rotor locked up due to run capacitor short, bearings are seized, excessive liquid refriger-
ant, etc. (NOTE: May need to install hard start kit). Clears the error after 4 consecutive normal run
cycles or after power reset.
405
406
Critical
Critical
(Outdoor Unit) The compressor circuit is open.
This could be due to a power disconnection,
open fuse etc.
Compressor circuit open (due to power disconnection, open fuse, etc.) Clears the
error after 1 normal compressor run cycle.
(Outdoor Unit) The required amount of current is
not passing through the start current transform-
er.
Required amount of current is not passing through Start current transformer. Clears the error after
current is sensed in START sensor, or after power reset.
table continued on next page
506920−01 09/12
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Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer
alert button. Minor and Moderate alerts are found only in the Installer alert button.
Alert
Code
Priority
Alert Text
Steps to clear
407
Critical
(Outdoor Unit) The required amount of current is
not passing through run current transformer.
Required amount of current is not passing through Run current transformer. Clears the error after
current is sensed in RUN sensor, or 1 normal compressor run cycle, or after power reset
408
409
Critical
(Outdoor Unit) The compressor is running con-
tinuously.
Compressor runs continuously. Clears the error after 1 normal compressor run
cycle or after power reset.
Moderate
(Furnace / Air Handler / Outdoor Unit) The sec-
ondary voltage for the (furnace, air−handler or
outdoor unit) has fallen below 18VAC. If this
continues for 10 minutes, the thermostat will
turn off the (furnace, air−handler or outdoor unit).
Secondary voltage is below 18VAC. After 10 minutes, operation is discontinued.
Clears the code after voltage is higher than 20 VAC for 2 seconds or after power
reset.
410
411
Moderate
Critical
(Outdoor Unit) The outdoor unit pressure is be-
low the required limit.
Unit pressures are below the lower limit. Pressure switch opens at 40 psig (system shuts down) and
closes at 90 psig (system restarts).
(Outdoor Unit) The low pressure switch has
opened 5 times during one cooling cycle. As a
result, the thermostat has shutdown the outdoor
unit.
Open low pressure switch error count reached 5 strikes. Check system charge using approach and
sub cooling temperatures. Reset by putting outdoor unit control in test mode or resetting low voltage
power.
412
413
Moderate
Critical
(Outdoor Unit) The outdoor unit pressure is
above the required limit. The system will shut
down.
Unit pressure is above the upper limit. Pressure switch opens at 590 psig (system shuts down) and
closes at 418 psig (system restarts).
(Outdoor Unit) The high pressure switch has
opened 5 times during one cooling cycle. As a
result, the thermostat has shutdown the outdoor
unit.
Open high pressure switch error count reached 5 strikes. Check system charge
using approach and sub cooling temperatures. Check outdoor fan operation. Check for dirt or debris
blocking air flow to outdoor unit. Reset by putting outdoor unit control in test mode or resetting low
voltage power.
414
415
416
Critical
Critical
Critical
(Outdoor Unit) The discharge line temperature
is higher than the recommended upper limit of
279ºF.
Discharge line temperature is > 279ºF. Make sure coil is clean and airflow unobstructed in and out of
condenser. Check system operating pressures and compare to unit charging charts in installation
manual. Clears after discharge temperature is < 225ºF.
(Outdoor Unit) The discharge line temperature
has been consistently higher than the recom-
mended upper limit of 279ºF.
Discharge line high temperature error count reached 5 strikes. Make sure coil is clean and airflow
unobstructed in and out of condenser. Check system charge using approach and sub cooling tem-
peratures. Reset by putting outdoor board in test mode or resetting low voltage power.
(Outdoor Unit) The outdoor coil sensor is either
open, short−circuited or the temperature is out of
sensor range. As a result the outdoor unit con-
trol will not perform any defrost tempering.
Sensor being detected open or shorted, or temperature is out of sensor range.
Outdoor unit control will not perform demand or time/temperature defrost operation. (System will still
heat or cool.) Clears when outdoor unit control detects proper sensor readings.
417
Critical
(Outdoor Unit) The outdoor unit sensor is either
open, short−circuited or the temperature is out of
sensor range. As a result the outdoor unit con-
trol will not perform any defrost tempering.
Outdoor unit control detects open or shorted sensor, or temperature that is out of sensor range.
Critical Alert after 10 minutes. Reset by replacing sensor. This fault is detected by allowing the unit to
run for 90 seconds before checking sensor resistance. If the sensor resistance is not within range
after 90 seconds, the board will count one fault. After 5 faults, the board will lock out. Check for
proper sensor reading and attachment to line. Replace if out−of−specifications.
table continued on next page
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 53
Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer
alert button. Minor and Moderate alerts are found only in the Installer alert button.
Alert
Code
Priority
Alert Text
Steps to clear
418
Moderate
(Outdoor Unit) There is a faulty ꢁW" output cir-
cuit.
Faulty W output circuit.
419
420
Critical
Critical
(Outdoor Unit) The ꢁW" output on the outdoor
unit has reported more than 5 errors. As a re-
sult, the system has shutdown the outdoor unit.
W output hardware fault count reached 5 strikes.
(Air Handler) The heat pump defrost cycle has
taken more than 20 minutes to complete.
Defrost cycle lasts longer than 20 minutes. Check heat pump operation. Cleared
when W1 signal is removed. Applicable only in communicating mode with non−communicating heat
pump.
421
700
701
702
703
704
705
Critical
(Outdoor Unit) The ꢁW" output terminal on the
outdoor unit is not wired correctly.
Voltage sensed on W output terminal when Y1 out is deactivated.
Moderate
Moderate
Moderate
Moderate
Moderate
Moderate
(Stat) The temperature sensor in the thermostat
is not working properly.
Recalibrate thermostat to clear. Replace thermostat if needed.
(Stat) The thermostat is reading indoor tempera-
tures above the pre−programmed limit.
Recalibrate thermostat to clear; cool thermostat; adjust setpoint. Replace thermostat, if needed.
Recalibrate thermostat to clear; warm thermostat; adjust setpoint. Replace thermostat, if needed.
Recalibrate thermostat to clear; adjust setpoint. Replace thermostat, if needed.
Recalibrate thermostat to clear. Replace thermostat, if needed.
(Stat) The thermostat is reading indoor tempera-
tures below the pre−programmed limit.
(Stat) The humidity sensor in the thermostat is
not working properly.
(Stat) The thermostat is reading indoor humidity
levels above the pre−programmed limit.
(Stat) The thermostat is reading indoor humidity
levels below the pre−programmed limit.
Recalibrate thermostat to clear. Replace thermostat, if needed.
Ohm reading between i+ and i− anywhere on the RSBus with supply power off should be between 70
and 90 ohms. If above 90 ohms, check and repair wiring, splices or other wiring defects that may be
causing the excessive resistance. If less than 70 ohms, check for shorted wires.
Ohm
Check
The ohm reading in the system is either too
high or too low.
ꢀ
Homeowner Service Alert Codes8
Number
3000
Value
Number
3002
Value
Number
3004
Value
Number
Value
Number
Value
Filter 1
Filter 2
Humidifier Pad
UV Light
Maintenance
4000
User WiFi state change, disable
Firmware download failed
4002
Image file download failed
3001
3003
3005
PureAir Maintenance 4001
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Bold text indicates a button, or text display on the thermostat.
Table 6. Troubleshooting Tips
No.
1
Issue / Problem
Possible Cause
Corrective Action / Comments
− No electric heat operation.
− The thermostat system setting
does not offer a emerg. heat choice
on an HP system.
− The thermostat does not offer any
ꢁheat" choice on an AC system with
air handler with electric heat.
Electric heat was not manually
configured configured at the Air
Handler Control (AHC) before the
icomfort Wi-Fit system discov-
ery process at initial power−up.
− Manually configure to discover the electric heat section(s) on the air
tails).
− Re−setup the icomfort system by selecting the setup button in the
Installer program and press start to begin system discovery; then
reconfigure the system.
2
Thermostat Displays System Wait-
ing message and the furnace does
respond to a heating demand (no red
critical alert icon or alert messages
are displayed on the thermostat).
The furnace is in ꢁwatchguard"
mode (moderate alert) and will
not display the red critical alert
icon nor be displayed in the
homeowner alert button.
− Go to the installer program alert button to view all alerts and details
about those alerts.
− If the furnace is in ꢁwatchguard" mode, the furnace can be reset from
the Home screen by setting the thermostat system settings to off
for 20 sec, then back to heat. Then initiate a new heat demand.
3
4
Outdoor temperature is not displayed
on the thermostat.
Outdoor Temp Display must be
enabled to display the outdoor
temperature on the home screen.
On the home screen, press the right arrow
then press the display settings button. Click on outdoor temp dis-
play button to toggle ON.
A humidifier was added to the system
as non−communicating equipment
and the thermostat does not provide
the ability to adjust the RH setpoint.
Humidification Control Mode is
set for ꢁDisplay only" which will
not allow the icomfort system to
control the humidifier.
− In the installer program, select the equipment button. Select ꢁSys-
tem" from the device list using the up/down arrows and press the edit
button. Use up/down arrows to select Humidification Control Mode
from the list. Select the desired humidifier control mode: Basic, Preci-
sion, or Dew Point. (Basic is the most popular) and press the save
button. Follow the red instructions then exit the system.
− If Humidification Control Mode is not offered as a menu item
choice, the Humidifier must be added to the icomfort system using
the Add or Remove Non−communicating equipment screen under
the thermostat installer program in the setup button.
5
The non−communicating outdoor unit
is part of the system, but the thermo-
stat does not display the outdoor unit.
The outdoor unit was not added
as a non−communicating unit dur-
ing initial system setup.
In the thermostat installer program select the setup button and follow
the on screen instructions until you reach the Add or Remove Non−
communicating equipment screen; press yes. Select Outdoor Unit
Type from the menu and press the edit button. Select 1 Stage AC Unit
or 2 Stage AC Unit and press save. Follow the red instructions then
exit the system.
table continued on next page
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 55
Bold text indicates a button, or text display on the thermostat.
No.
6
Issue / Problem
Possible Cause
Corrective Action / Comments
High Balance Point and Low Bal-
ance Point are not listed as a menu
item to adjust the setpoint on the ther-
mostat of the heat pump system.
Balance Point Control must be
enabled to display as the High
Balance Point and Low Bal-
ance Point in the menu and pro-
vide the ability for the installer to
adjust the setpoint.
− In the installer program select the equipment button, then scroll
down to system device to System and press edit. Scroll down the
menu item choices to Balance Point Control and press edit. Select
enable and press save. High Balance Point and Low Balance
Point are now listed; adjust the balance point settings and press
save.
− If Balance Point Control is not shown as a menu item choice, the
system is not connected to Wi−Fi or does not have/recognize an
outdoor sensor or the system is not a heat pump.
7
icomfort thermostat does not show a
choice for Dew Point Control Hu-
midification mode (only Basic and
Precision choices).
Dew Point Control will only be
displayed if the system has an
outdoor sensor.
− Add an outdoor sensor to the system and connect to the outdoor
sensor terminals on the indoor unit.
− icomfort system is not able to read the outdoor temperature sensor in
the icomfort outdoor unit, check outdoor sensor.
8
9
The icomfort does not display an alert
code message, but the furnace or unit
control displays a diagnostic code.
The red Critical Alert icon and
homeowner alert button do not
display non−critical alerts.
Go to the installer program alert button to view all alerts and details
about those alerts.
The icomfort thermostat does not dis-
play the Model # and or Serial # in-
door or outdoor unit.
The icomfort control was re-
placed with a replacement control
before the icomfort system was
initially setup or configured.
− Replacement icomfort controls do not have the Model # or Serial #
loaded in the control.
− The Model # and Serial # cannot be added to the control.
− System will still operate normally.
10
11
A non−communicating 2−stage out-
door unit was added to the system
but the unit only runs in 2nd stage.
The ꢁW915 2 Stage Compr" clip-
pable option link on the furnace
or air handler control must be cut
when used with a non−communi-
cating 2−stage outdoor unit.
Cut the ꢁW915 2 Stage Compr" option link on the furnace or air handler
control.
Transfer the Model #, Serial # and
system settings to a replacement
control.
The icomfort system is capable
of copying settings from the pre-
vious configuration to the new
compatible device (control)
found.
Reconfigure the system using the installer program and select the
setup button. The system will go through the system discovery pro-
cess. The thermostat will display missing devices (old control) and
found compatible devices (new control). Press the next button to
accept the new device and copy the settings. Thermostat will display
Settings were copied after successfully copying the information to the
new control. See section title ꢁReconfiguring a system" in this manual.
table continued on next page
506920−01 09/12
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Page 56
Bold text indicates a button, or text display on the thermostat.
No.
12
Issue / Problem
Possible Cause
Corrective Action / Comments
Determine the actual Software ver-
sion of the thermostat or one of the
icomfort unit controls.
icomfort software is stored in the
control and can be retrieved.
From the home screen click the right arrow
then click service info button; then click the thermostat info button;
(display shows model & serial numbers and hardware, software, Wi−Fi
revision information).
13
The icomfort thermostat shows an er-
ror code related to the outdoor sensor
and or the DAS even after removing
these optional accessories.
The outdoor sensor and dis-
charge sensor are options, how-
ever if the system was setup with
the sensor in place, the icomfort
system will see an open sensor
reading if it is disconnected.
− Disconnect the outdoor sensor or discharge sensor.
− Using the installer program, reset the system by selecting setup
button and follow the screen prompts as the thermostat goes through
a new system discovery.
14
15
The icomfort thermostat will not pro-
vide me a choice to add a non−com-
municating heat pump to a gas fur-
nace.
The icomfort system does not
have the ability to control a non−
communicating heat pump on a
dual fuel system.
Replace the icomfort thermostat with a conventional thermostat that
has a dual fuel control mode (e.g. Lennox ComfortSenset 7000).
During system discovery, the ther-
mostat displays a message Thermo-
stat is unable to communicate to
system components.
The thermostat was not success-
ful in communicating to the indoor
unit.
− Verify the indoor unit has a icomfort communicating control.
− Check wiring connections at R, i+, i− and C at the indoor unit and
thermostats.
− Check R, i+. I− , C wires for open/shorts.
16
17
Temperature or humidity calibration
does not respond to calibration
changes.
Temperature/Humidity calibration
changes will change display 1ºF
or 1% RH every 3 minutes.
Allow the system to stabilize and complete the calibration mode due to
the time delay. A 5ºF calibration change will take 15 minutes to calibrate
the display.
The installer adjustable settings used
to configure the system are not listed
in the equipment button under the
Thermostat 49W95 (only Temp
Reading Calibration and Humidity
Reading Calibration are listed as
menu items).
The adjustable system configura-
tion settings are listed in the
equipment button under Sys-
tem.
− In the installer program select the equipment button and choose
System from system device and press edit.
− Over 25 installer adjustable settings are provided including balance
point, humidification control, dehumidification modes, stage differen-
tials and delays.
table continued on next page
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 57
Bold text indicates a button, or text display on the thermostat.
No.
18
Issue / Problem
Possible Cause
Corrective Action / Comments
During the cooling mode the dis-
played air volume on the indoor con-
trol is substantially lower than ex-
pected.
The system may be following ꢁthe
cooling ramping" profile or may
be in ꢁthe dehumidification
mode".
− During the default cooling ramping profile the blower will run for 7.5
minutes at 82% of the cooling air volume. If the ꢁcooling ramping
profile" is selected, the system will ramp to 100% after 7.5 minutes.
− The dehumidification mode will run the system at 70% of the cooling
air volume which will be in addition to the air volume reduction pro-
vided during the ramping profile. During the dehumidification mode, a
ꢁd" will be displayed on the furnace or air handler control.
19
20
The Indoor unit is not providing the
expected air volume according to the
cfm shown on the indoor unit control.
− Indoor unit air volume settings
in the icomfort thermostat are
not correct.
− System is operating in the cool-
ing mode and following the
cooling ramping profile or dehu-
midification air volume.
− In the installer program select the equipment button and choose the
furnace or air handler from the system devices list and press edit.
Verify/set the correct air volume for heating and cooling modes.
− If in the cooling mode check for cooling ramp mode or dehumidifica-
tion mode as in #18.
− No second stage cooling is pro-
vided on a icomfort outdoor unit.
− Space temperature is above second
stage differential and has run in first
stage a long time.
The red Critical Alert icon and
homeowner alert button do not
display non−critical alerts.
− Go to the installer program alert button to view all alerts and details
about those alerts.
− Look for alert code 401 (Compressor Long On Cycle) which indicates
compressor ran more than 18 hours continuous and will lock out 2nd
stage compressor.
− No red Critical Alert icon or alert is
displayed in the homeowner alert
button.
− Cycle indoor power off and back on, alert code 401 will clear within a
few minutes.
21
22
No weather being displayed.
icomfort Wi-Fit not communicat-
ing with router.
Unable to complete Wi−Fi router / in-
ternet connection
Refer to 507037−01 Wi−Fi Troubleshooting checklist for icomfort Wi−Fit thermostat.
506920−01 09/12
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Page 58
Wiring Diagrams
icomfortt Communicating System Wiring
icomfort by Lennox
FURNACE (IFC) OR AIR HANDLER (AHC)
OPTIONAL DIS-
CHARGE AIR SEN-
SOR (SEE DAS
NOTE)
t
DAS NOTE − The discharge air sensor is
intended to be mounted downstream of the
furnace heat exchanger and air conditioning
coil. It must be placed in free airflow, where
other accessories (such as humidifiers, UV
lights, etc.) will not interfere with its accura-
cy. Wiring distance between the IFC or AHC
OPTIONAL OUT-
DOOR AIR SENSOR
(SEE OAS NOTE)
and the discharge air sensor should not ex-
ceed 10ft when wired with 18−gauge ther-
mostat wire.
OAS NOTE − Wiring distance between the
IFC or AHC and the outdoor temperature
sensor should not exceed 200ft when wired
with 18−gauge thermostat wire.
icomfort Wi-Fit
THERMOSTAT
icomfort by Lennox
t
OUTDOOR AIR CON-
DITIONING OR HEAT
PUMP UNIT
RSBus
RSBus
icomfort Wi-Fi
t
Thermostat
icomfort by Lennox
t
t
Indoor Furnace or Air Handler
Outdoor Condensing Unit or Heat Pump
Maximum total length of all connections on
the RSBus is limited to 1500ft.
icomfort by Lennox
Wire gauge of RSBus wire is 18.
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 59
Wiring Diagrams
icomfortt Communicating Indoor/non−Communicating Outdoor System Wiring
icomfort by Lennoxt AIR HANDLER (AHC)
icomfort by Lennoxt FURNACE (IFC) OR AIR HANDLER (AHC)
OPTIONAL DIS-
CHARGE AIR SEN-
SOR (SEE DAS
OPTIONAL DIS-
CHARGE AIR SEN-
SOR (SEE DAS
OPTIONAL OUT-
DOOR AIR SENSOR
(SEE OAS NOTE
OPTIONAL OUT-
DOOR AIR SENSOR
(SEE OAS NOTE
icomfort Wi-Fit
THERMOSTAT
Setup Notes:
icomfort Wi-Fit
THERMOSTAT
Cut Y1−Y2 Onboard Link
For 2−stage Outdoor
Units
Cut R−O Onboard Link
For Outdoor Heat Pump
Units
RSBus
RSBus
Maximum total
length of all connec-
tions on the RSBus
is limited to 1500ft.
Maximum total
length of all connec-
tions on the RSBus
is limited to 1500ft.
STANDARD
OUTDOOR AIR
CONDITIONING
UNIT − 1 OR 2
STAGE
STANDARD
OUTDOOR HEAT
PUMP UNIT − 1
OR 2 STAGE
Wire gauge of
RSBus wire is 18.
Wire gauge of
RSBus wire is 18.
icomfort Wi-Fi
Thermostat
t
Setup Note:
icomfort by Lennoxt Air
Handler
Cut Y1−Y2 Onboard
Link For 2−stage
Outdoor Units
Standard Outdoor Heat
Pump
icomfort Wi-Fit Thermostat
icomfort by Lennoxt Indoor Furnace or Air Handler
Standard Outdoor Condensing Unit
506920−01 09/12
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Page 60
Optional Accessories Wiring
for use with any icomfort by Lennoxt system
NOTE: icomfort Wi-Fit THERMOSTAT SENSES HUMIDITY & CONTROLS 24V ꢁH" OUTPUT (& 120V ꢁH" OUT-
PUT) TO CYCLE HUMIDIFIER BASED ON DEMAND. NO OTHER CONTROL OR HUMIDISTAT REQUIRED.
icomfort by Lennox
SLP98 & G71MPP FURNACE
(IFC) OR AIR HANDLER (AHC)
t
OPTIONAL OUTDOOR AIR SENSOR FOR USE WITH HUMIDIFIER (IF NOT ALREADY IN THE SYSTEM FOR
DISCHARGE AIR SEN-
SOR (REQUIRED FOR
EVEN HEAT) (SEE DAS
HCWH−01
For SL290 & EL296, see HUMIDIFIER diagram
DEHUMIDIFIER CONTROL
below (bottom right)
icomfort Wi-Fi
THERMOSTAT
t
HVAC
EQUIPMENT
RSBus
AUXILIARY DEHUMIDIFIER 090 & 135
capacities only (065 not compatible)
Maximum total
icomfort by Lennox
t
SL280, EL296 FURNACE
length of all connec-
tions on the RSBus
is limited to 1500ft.
icomfort
Wi-Fit
thermostat
Wire gauge of
RSBus wire is 18.
NOTE: 24V UV LIGHT
APPLICATIONS
icomfort
enabled
outdoor unit
t
In an icomfort by Lennox
t
system, neither furnace nor
air handler transformer will
have adequate VA to power
24V UV light applications.
An additional transformer for
UV light applications is re-
quired. UV light wiring con-
nections are independent of
HVAC system operation; see
UV light installation instruc-
tions.
48G96 Relay
GND
IN
120VAC<−−−−−−−HUMIDIFIER CONNECTIONS−−−−−−> 24VAC
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 61
Optional Accessories Wiring
for use with any icomfort by Lennoxt system
icomfort by Lennoxt
2−STAGE FURNACE
icomfort by Lennox
SLP98 & G71MPP FURNACE
(IFC) OR AIR HANDLER (AHC)
t
LVCS Ventilation Control System
icomfort by
Lennox
Furnace or
Air Handler
icomfort by
Lennox
Outdoor Air
Conditioning
or Heat Pump
t
t
DS
CUT
R−DS
W914
R
icomfort Wi-Fit
Thermostat
(POWER COMPANY INTERRUPTION
SYSTEMS ARE WIRED SAME AS
OVERFLOW SWITCH)
RSBus
Standard 1
or 2 stage
AC or HP
unit
icomfort by Lennoxt
Furnace or Air Handler
HEPA Bypass Filter X2680 HEPA Interlock Kit
26L56 Currrent sensing relay kit.
Pass indoor
blower motor
common wire
through cur-
rent loop.
NOTE: Pass the blower motor L1 wire through the current loop
on the current sensing relay as shown.
HVAC Heat or Cool call, or the fan is in continuous operation, the ventilation controller will open
OA damper to ventilate if the outdoor temperature and indoor humidity are within the limits of the
ventilation controller.
See HEPA In-
terlock Kit for
installation
details
icomfort by Lennoxt
Furnace or Air Handler
LVCS. Set cycle time to 1 hour; set ventilation time to 60 minutes.
NOTE: Use the icomfortt circulate fan percentage of ON* TIME to control ventilation time.
506920−01 09/12
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Thermostat wire termination in communicating system
Outdoor Unit
Indoor Unit
Controller
icomfort Wi-Fi
thermostat
t
Single wire to
terminal C
Single wire to
terminal C
Unused wires
Unused wires
Communicating systems using the icomfort Wi-Fit thermostat require four
thermostat wires between the thermostat and the furnace/air handler control
and four wires between the outdoor unit and the furnace/air handler control.
When a thermostat cable with more than four wires is used, the extra wires
must be properly connected to avoid electrical noise. The wires must not be
left disconnected.
Use wire nuts to bundle the unused wires at each end of the cable. A single
wire should then be connected to the indoor unit end of the wire bundle and
attached to the ꢁC" terminals as shown in the diagram above.
This is not an issue in non−communicating systems.
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Configuring heat strips on Air Handler Control (AHC)
IMPORTANT: After electric heat strips are installed, the Air Handler Control
(AHC) must be manually configured to detect the number of electric heat
sections. (SEE ALSO 506181−01 for complete configuration guide.)
FUSE 3 AMP
HEAT
HUMIDITROL
1
2
2
2
3
4
C
DH
XFMR 24V
HUMIDIFICATION
COOL
To configure the heat strips so that they will be detected by the thermostat:
24 VAC
COM
1
3
4
AUTO
SMART
S
Power must be applied to the air handler but NOT to the thermostat.
Remove thermostat from baseplate or remove wires to thermostat at
the air handler.
EVENHEAT
DELAY
DS
O
1
3
4
1
4
7
3
2
P8
S
S
S
S
On the air handler control (AHC), unit should be in idle mode (decimal
blinks at 1 Hertzꢀ0.5 second ON, 0.5 second OFF.
BLOWER
ONLY CFM
6
9
5
8
L
ADJUST
H
NORM
+
−
Select field test modeꢀpress and hold the pushbutton until solid ꢁ–"
appears; release button. Display will blink.
1
2
3
4
DH
R
C
Press the pushbutton and wait for the display LED to show ꢁH" (capital
H), then release the button.
XFMR LINE
L2
Y1
Y2
L1
The AHC cycles the indoor blower motor ꢁon" to the selected heat
speed and stages the electric heat relays ꢁon" and ꢁoff" to automatically
detect the number of electric heat sections. The AHC stores the num-
ber of electric heat sections, then automatically exits ꢁField Test
Mode".
G
A92
INTEGRATED
CONTROL
INDOOR
BLOWER
POWER
L2 L1
G
W3
W2
W1
EARTH
INDOOR BLOWER
SIGNAL
S
At this point, the icomfortWi-Fit will now detect the heat strip informa-
tion stored in the AHC.
4
6
5
1
2
3
R
I + I −
C
OUTDOOR
AIR SENSOR AIR SENSOR
DISCHARGE
R
I + I −
C
OUTDOOR UNIT
I + I −
LINK
THERMOSTAT
PUSHBUTTON
LED
506920−01 09/12
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Page 64
Setting up typical systemsꢁFURNACE & AIR CONDITIONING UNIT
icomfortt−enabled furnace & icomfortt−enabled air conditioner
An icomfort−enabled gas furnace (G71MPP, EL296V, SLP98, SL280) with
an icomfort−enabled AC (XC17 or XC21 only) unit.
save either way. The red settings will go away after pressing save.
When all CFM settings are complete, press the back button. Press
next step to advance to the tests button.
ing installed with the system.
6. Using up/down arrows, select the test options individually (if so de-
sired, you may choose to TEST ALL) and press the select button. (If
selecting individual tests, repeat until you have selected all you intend
to run.)
D
D
D
4−conductor thermostat wire from the icomfortWi-Fit thermostat
to the gas furnace (R, i+, i−, C)
4−conductor thermostat wire from the integrated furnace control
(IFC) terminal strip to the icomfort−enabled AC unit (R, i+, i−, C)
Wiring as required for accessories
7. Press the start button. Confirm the AC unit is electrically energized and
operational. Press done.
8. Exit the installer setup mode by selecting the EXIT button.
2. DO NOT cut any option link on air handler control.
TIPS
S
3. After the entire system is wired, power up the system; the icomfortWi-
Fit thermostat will check the system for installed communication de-
vices.
An outdoor temperature sensor is provided in an icomfort−enabled air
conditioning unit. To display the outdoor temperature on the home
screen of the thermostat, you must turn on (or off) the ꢁOutdoor Temp
Display". From the Home screen, press press for more area and se-
lect the HELP icon. Press the user preferences box and scroll down
to ꢁOutdoor Temp Display". Press the modify button and use the up/
down arrows to select On (or Off) and then press the save button.
Press done to return to the Home screen.
4. On the thermostat, go past the ꢁAdd or remove non−communicating de-
vices" to the ꢁTo adjust a setting" screen.
5. Use the arrows to select ꢁFurnace" from system devices list; press
edit. From this Furnace screen you will have access to the various air-
flow settings. Set the system air volumes according the needs of the
home. When you change certain settings, the system will prompt you
to ꢁplease view and save all red settings". Use the arrows to select the
red settings and press edit. Either make changes or not, but press
S
Turn the Indoor Humidity Display on and off in a similar manner as
above.
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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icomfortt−enabled furnace & non−communicating air conditioner
An icomfort−enabled gas furnace (G71MPP, EL296V, SLP98, SL280) with a
conventional non−communicating air conditioner.
7. Use the arrows to select ꢁFurnace" from system devices list; press
edit. From this Furnace screen you will have access to the various air-
flow settings. Set the system air volumes according the needs of the
home. When you change certain settings, the system will prompt you
to ꢁplease view and save all red settings". Use the arrows to select the
red settings and press edit. Either make changes or not, but press
save either way. The red settings will go away after pressing save.
When all CFM settings are complete, press the back button. Press
next step to advance to the tests button.
1. WiringꢀSee Communicating Indoor/Non−Communicating Out-
D
4−conductor thermostat wire from the icomfortWi-Fit thermostat
to the gas furnace (R, i+, i−, C)
D
Conventional thermostat wire with 2 to 4 conductors from the fur-
nace terminal strip to the AC unit (Y1, C, & on some models, R &
Y2)
8. Using up/down arrows, select the test options individually (if so de-
sired, you may choose to TEST ALL) and press the select button. (If
selecting individual tests, repeat until you have selected all you intend
to run.)
D
Wiring as required for accessories
2. Cut option link ꢁ2−stage compr" (Y1 to Y2, W915) on furnace control on
two−stage AC units only.
9. Press the start button. Confirm the AC unit is electrically energized and
operational. Press done.
3. After the entire system is wired, power up the system; the icomfortWi-
Fit thermostat will check the system for installed communication de-
vices.
10. Exit the installer setup mode by selecting the EXIT button.
TIPS
4. In the installer setup button, select ꢁAdd or Remove non−communicat-
ing equipmentꢁ by using the yes button.
S
If the thermostat ꢁSystem Setting" only shows ꢁheat onlyꢁ or ꢁoffꢁ
choices and does not offer a choice for ꢁcooling" you must ꢁInstall" the
non−communicating air conditioning unit. Select ꢁAdd or Remove non−
communicating" under the setup button in the Installer Section. Select
ꢁOutdoor Unit Type", press the edit button and then choose ꢁ1 Stage
AC" or ꢁ2 Stage AC" and press the save button.
5. Select the ꢁOutdoor Unit Type" from the device list using the up/down
arrows and press the edit button. Then select the AC type (1−stage AC
or 2−stage AC) and press the save button.
6. Select the outdoor unit capacity and minimum outdoor unit capacity
(2−stage only). Press save after editing each setting. Press back when
finished to return to the adjust screen.
S
On two−Stage Air Conditioners you must cut the ꢁW915 2 Stage
Compr" link on the furnace control.
506920−01 09/12
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Page 66
Setting up typical systemsꢁFURNACE & HEAT PUMP (DUAL FUEL)
icomfortt−enabled Furnace & icomfortt−enabled HP unit (Dual fuel)
Dual fuel system using an icomfort−enabled gas furnace (G71MPP, EL296V,
SLP98, SL280) with an icomfort−enabled heat pump (XP17 or XP21 only).
When all CFM settings are complete, press the back button. Press
next step to advance to the tests button.
8. Test the system operation and confirm the HP unit is electrically ener-
gized and operational. Press done.
ing installed with the system.
9. Exit the installer setup mode by selecting the EXIT button.
D
D
D
4−conductor thermostat wire from the icomfortWi-Fit thermostat
to the gas furnace (R, i+, i−, C)
4−conductor thermostat wire from the furnace terminal strip to the
icomfort−enabled HP (R, i+, i−, C)
Wiring as required for accessories
TIPS
S
High & Low Balance points are enabled and adjusted under the install-
er section of the thermostat. In the equipment button select ꢁSystem"
and press edit. Scroll down to ꢁBalance Point Control" and press edit
and select Enabled and then save.
2. DO NOT cut any option link on furnace control.
S
An outdoor temperature sensor is provided in an icomfort−enabled heat
pump unit. To display the outdoor temperature on the home screen of
the thermostat, you must turn on (or off) the ꢁOutdoor Temp Display".
From the Home screen, press press for more area and select the
HELP icon. Press the user preferences box and scroll down to ꢁOut-
door Temp Display". Press the modify button and use the up/down ar-
rows to select On (or Off) and then press the save button. Press done
to return to the Home screen.
3. After the entire system is wired, power up the system; the icomfortWi-
Fit thermostat will check the system for installed communication de-
vices.
4. On the thermostat, go past the ꢁAdd or remove non−communicating de-
vices" to the ꢁTo adjust a setting" screen. Select ꢁSystem" from the de-
vice list using the up/down arrows and press the edit button
5. Select Balance Point Control and press edit. Use the down arrow to
select ꢁEnabled" and press save. High and Low Balance Points will ap-
pear in red.
S
S
Turn the Indoor Humidity Display on and off in a similar manner as
above.
Gas heat is not provided to temper the air during defrost cycles.
6. Complete Balance Point Control by editing the High and Low Balance
Points. It is not necessary to change the defaults, but you must save
each setting. The red settings will go away after pressing save. Press
the back button to return to the adjust screen.
icomfortt−enabled Furnace &
non−communicating HP unit (Dual fuel)
7. Use the arrows to select ꢁFurnace" from system devices list; press
edit. From this Furnace screen you will have access to the various air-
flow settings. Set the system air volumes according the needs of the
home. When you change certain settings, the system will prompt you
to ꢁplease view and save all red settings". Use the arrows to select the
red settings and press edit. Either make changes or not, but press
save either way. The red settings will go away after pressing save.
NOTE − DO NOT use a conventional non−communicating heat pump unit in
an icomfort dual fuel system.
TIPS
S
A conventional thermostat capable of controlling a dual fuel system,
®
like the ComfortSense 7000, must be selected for this type of applica-
tion.
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 67
Setting up typical systemsꢁAIR HANDLER & AIR CONDITIONER
icomfortt−enabled Air Handler & icomfortt−enabled Air Conditioner
An icomfort−enabled air handler (CBX32MV or CBX40UHV) with an icom-
fort−enabled air conditioner (XC17 or XC21 only).
red settings and press edit. Either make changes or not, but press
save either way. The red settings will go away after pressing save.
When all CFM settings are complete, press the back button. Press
next step to advance to the tests button.
NOTE − IMPORTANT! Be sure to configure the air handler control so that
heat strips (if used) information will be detected by the icomfort thermostat.
This must be done prior to powering up the system and thermostat.
7. Test the system operation and confirm the system is electrically ener-
gized and operational. Particularly, test the heat strips (when used) to
insure the auxiliary stages operate as designed. Press done.
1. Configure air handler control (AHC) for auxiliary heat strips if used.
ing installed with the system.
8. Exit the installer setup mode by selecting the EXIT button.
TIPS
S
If the thermostat ꢁSystem Setting" does not offer a choice for ꢁemerg.
heat" and or the electric heat will not function; the electric heat has not
been configured. Configure the electric heat as described on Page 64,
or for complete detail, see the Air Handler installation instructions. Re-
configure the icomfort system by entering the installer program and se-
lecting the setup button and following the prompts.
D
D
D
4−conductor thermostat wire from the icomfortWi-Fit thermostat
to the air handler (R, i+, i−, C)
4−conductor thermostat wire from the air handler terminal strip to
the icomfort−enabled AC (R, i+, i−, C)
Wiring as required for accessories
3. DO NOT cut any option link on air handler control.
S
An outdoor temperature sensor is provided in an icomfort−enabled air
conditioning unit. To display the outdoor temperature on the home
screen of the thermostat, you must turn on (or off) the ꢁOutdoor Temp
Display". From the Home screen, press press for more area and se-
lect the HELP icon. Press the user preferences box and scroll down
to ꢁOutdoor Temp Display". Press the modify button and use the up/
down arrows to select On (or Off) and then press the save button.
Press done to return to the Home screen.
4. After the entire system is wired, power up the system; the icomfortWi-
Fit thermostat will check the system for installed communication de-
vices.
5. On the thermostat, go past the ꢁAdd or remove non−communicating
equipment" to the ꢁTo adjust a setting" screen.
6. Use the arrows to select ꢁAir Handler" from system devices list; press
edit. From this Air Handler screen you will have access to the various
airflow settings. Set the system air volumes according the needs of the
home. When you change certain settings, the system will prompt you
to ꢁplease view and save all red settings". Use the arrows to select the
S
Turn the Indoor Humidity Display on and off in a similar manner as
above.
506920−01 09/12
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icomfortt enabled Air Handler & conventional non−communicating Air Conditioner
An icomfort air handler (CBX32MV or CBX40UHV) with a conventional non−
communicating AC unit.
9. Use the arrows to select ꢁAir Handler" from system devices list; press
edit. From this Air Handler screen you will have access to the various
airflow settings. Set the system air volumes according the needs of the
home. When you change certain settings, the system will prompt you
to ꢁplease view and save all red settings". Use the arrows to select the
red settings and press edit. Either make changes or not, but press
save either way. The red settings will go away after pressing save.
When all CFM settings are complete, press the back button. Press
next step to advance to the tests button.
NOTE − IMPORTANT! Be sure to set up the air handler control for heat strips
(if used) prior to powering up the system and thermostat.
1. Configure air handler control (AHC) for auxiliary heat strips if used.
2. Wiringꢀsee Communicating Indoor / Non−Communicating Out-
10. Test the system operation and confirm the system is electrically ener-
gized and operational. Particularly, test the heat strips (when used) to
insure the auxiliary stages have been detected and are operational.
Press done.
D
D
D
4−conductor thermostat wire from the icomfortWi-Fit thermostat
to the air handler (R, i+, i−, C)
icomfort air handler to conventional AC (5 – 8 wires). (Y1, Y2, C,
R, W1,W2)
Wiring as required for accessories
11. Exit the installer setup mode by selecting the EXIT button.
3. On 2−stage AC, cut the ꢁW915 2 Stage Compr" onboard clippable link.
TIPS
S
S
S
If the thermostat ꢁSystem Setting" does not offer a choice for ꢁemerg.
heat" and or the electric heat will not function; the electric heat has not
been configured. Configure the electric heat as described on Page 64,
or for complete detail, see the Air Handler installation instructions. Re-
configure the icomfort system by entering the installer program and se-
lecting the setup button and following the prompts.
4. On air handler control, remove jumper between W1 & W2 for two−stage
electric heat only.
5. After the entire system is wired, power up the system; the icomfortWi-
Fit thermostat will check the system for installed communication de-
vices.
6. In the installer setup button, select ꢁAdd or Remove non−communicat-
ing equipmentꢁ by using the yes button.
If the thermostat ꢁSystem Setting" only shows ꢁheat onlyꢁ or ꢁoffꢁ
choices and does not offer a choice for ꢁcooling" you must ꢁInstall" the
non−communicating air conditioning unit. Select ꢁAdd or Remove non−
communicating" under the setup button in the Installer Section. Select
ꢁOutdoor Unit Type", press the edit button and then choose ꢁ1 Stage
AC" or ꢁ2 Stage AC" and press the save button.
7. Select the ꢁOutdoor Unit Type" from the device list using the up/down
arrows and press the edit button. Then select the AC type (1−stage AC
or 2−stage AC) and press the save button.
8. On the thermostat, go past the ꢁAdd or remove non−communicating de-
vices" to the ꢁTo adjust a setting" screen. Select the ꢁSystem" from the
device list using the up/down arrows and press the edit button
On two−stage Air Conditioners you must cut the ꢁW915 2 Stage Compr"
Link on the air handler control.
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Setting up typical systemsꢁAIR HANDLER & HEAT PUMP UNITS
icomfortt−enabled Air Handler & icomfortt−enabled Heat Pump unit
An icomfort air handler (CBX32MV or CBX40UHV) with an icomfort−enabled
heat pump (XP17 or XP21 only) unit.
8. Use the arrows to select Air Handler from system devices list. Press
edit. From this Air Handler screen you will have access to the various
airflow settings. Set the system air volumes according the needs of the
home. When all CFM settings are complete, press the back button.
step to advance to the tests button.
NOTE − IMPORTANT! Be sure to set up the air handler control for heat strips
(if used) prior to powering up the system and thermostat.
1. Configure air handler control (AHC) for auxiliary heat strips if used.
9. Test the system operation and confirm the system is electrically ener-
gized and operational. Particularly, test the heat strips (when used) to
ensure the auxiliary stages operate as designed. Press done.
10. Exit the installer setup mode by selecting the EXIT button.
ing installed with the system.
D
D
D
4−conductor thermostat wire from the icomfortWi-Fit thermostat
to the air handler (R, i+, i−, C)
4−conductor thermostat wire from the air handler terminal strip to
the icomfort−enabled HP (R, i+, i−, C)
Wiring as required for accessories
TIPS
S
If the thermostat ꢁSystem Setting" does not offer a choice for ꢁemerg.
heat" and or the electric heat will not function; the electric heat has not
been configured. Configure the electric heat as described on Page 64,
or for complete detail, see the Air Handler installation instructions. Re-
configure the icomfort system by entering the installer program and se-
lecting the setup button and following the prompts.
3. DO NOT cut any option link on air handler control.
4. After the entire system is wired, power up the system; the icomfortWi-
Fit thermostat will check the system for installed communication de-
vices.
S
S
High & low balance points are enabled and adjusted under the installer
section of the thermostat. In the equipment button select ꢁSystem" and
press edit. Scroll down to ꢁBalance Point Control" and press edit and
select Enabled and then save.
5. On the thermostat, go past the ꢁAdd or remove non−communicating de-
vices" to the ꢁTo adjust a setting" screen. Select the ꢁSystem" from the
device list using the up/down arrows and press the edit button
An outdoor temperature sensor is provided in an icomfort enabled heat
pump unit. To display the outdoor temperature on the home screen of
the thermostat, you must turn on (or off) the ꢁOutdoor Temp Display".
From the Home screen, press press for more area and select the
HELP icon. Press the user preferences box and scroll down to ꢁOut-
door Temp Display". Press the modify button and use the up/down ar-
rows to select On (or Off) and then press the save button. Press done
to return to the Home screen.
6. Select Balance Point Control and press edit. Use the down arrow to
select Enabled and press save. High and Low Balance Points will ap-
pear in red.
7. Complete Balance Point Control by editing the High and Low Balance
Points. It is not necessary to change the defaults, but you must save
each setting. The red settings will go away after pressing save. Press
the back button to return to the adjust screen.
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Page 70
icomfortt−enabledAir Handler & conventional non−communicating Heat Pump unit
An icomfort air handler (CBX32MV or CBX40UHV) with a conventional non−
communicating heat pump unit.
9. Complete Balance Point Control by editing the High and Low Balance
Points. It is not necessary to change the defaults, but you must save
each setting. The red settings will go away after pressing save. Press
the back button to return to the adjust screen.
NOTE − IMPORTANT! Be sure to set up the air handler control for heat strips
(if used) prior to powering up the system and thermostat.
10. Use the arrows to select Air Handler from system devices list. Press
edit. From this Air Handler screen you will have access to the various
airflow settings. Set the system air volumes according the needs of the
home. When all CFM settings are complete, press the back button.
step to advance to the tests button.
1. Configure air handler control (AHC) for auxiliary heat strips if used.
ing installed with the system.
D
4−conductor thermostat wire from the icomfortWi-Fit thermostat
to the air handler (R, i+, i−, C)
11. Test the system operation and confirm the system is electrically ener-
gized and operational. Particularly, test the heat strips (when used) to
insure the auxiliary stages operate as designed. Press done.
D
Conventional thermostat wire with 5 to 6 conductors from icom-
fort air handler to conventional HP (5 – 8 wires). (Y1, C, R, W1, O,
and on some models Y2)
12. Exit the installer setup mode by selecting the EXIT button.
D
Wiring as required for accessories
TIPS
3. On air handler control, with 2−stage HP cut the ꢁW915 2 Stage Compr"
onboard clippable link. Cut W951 between W1 & W2 for two−stage
electric heat only.
S
If the thermostat ꢁSystem Setting" does not offer a choice for ꢁemerg.
heat" and or the electric heat will not function; the electric heat has not
been configured. Configure the electric heat as described on Page 64,
or for complete detail, see the Air Handler installation instructions. Re-
configure the icomfort system by entering the installer program and se-
lecting the setup button and following the prompts.
4. After the entire system is wired, power up the system; the icomfortWi-
Fit thermostat will check the system for installed communication de-
vices.
S
S
High & low balance points are enabled and adjusted under the installer
section of the thermostat. In the equipment button select ꢁSystem" and
press edit. Scroll down to ꢁBalance Point Control" and press edit and
select Enabled and then save.
5. In the installer setup button, select ꢁAdd or Remove non−communicat-
ing equipmentꢁ by using the yes button.
6. Select the ꢁOutdoor Unit Type" from the device list using the up/down
arrows and press the edit button. Then select the heat pump type
(1−stage HP or 2−stage HP) and press the save button.
If an optional outdoor temperature sensor has been installed, you may
display the outdoor temperature on the home screen of the thermostat.
To turn on (or off) the ꢁOutdoor Temp Display". From the Home screen,
press press for more area and select the HELP icon. Press the user
preferences box and scroll down to ꢁOutdoor Temp Display". Press
the modify button and use the up/down arrows to select On (or Off)
and then press the save button. Press done to return to the Home
screen.
7. On the thermostat, go past the ꢁAdd or remove non−communicating de-
vices" to the ꢁTo adjust a setting" screen. Select the ꢁSystem" from the
device list using the up/down arrows and press the edit button.
8. Select Balance Point Control (if outdoor sensor is installed) and press
edit. Use the down arrow to select ꢁEnabled" and press save. High and
Low Balance Points will appear in red.
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
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Page 71
Table 7. Replacement Controls
The following kits have been set up for replacement of the icomfortt−enabled controls.
Please note that control kits are unit− and revision−specific.
icomfortt−Enabled Unit
Replacement Kit Catalog No.
65W69
Control Part No.
605341−01
102813−02
103130−01
103130−01
605341−02
605341−03
103369−01
605341−05
103369−01
103369−01
605341−04
103369−01
605341−06
103369−01
G71MPP (rev. 03 or later)
SLP98 (rev. 01 or later)
73W45
SL280 (rev. 02 or later)
83W88
EL296 (rev. 01 or later)
83W88
CBX40UHV (rev. 02 or later) AND CBX32MV (rev. 06 or later)
XC17−24/30/42/60 (rev. 02 thru 04) AND XC17−36/48 (rev. 02 thru 05)
XC17−24/30/42/60 (rev. 05 or later) AND XC17−36/48 (rev. 06 or later)
XP17−24/30 (rev. 02 thru 05) AND XP17−36/42/48/60 (rev. 02 thru 04)
XP17−24/30 (rev. 06 or later) AND XP17−36/42/48/60 (rev. 05 or later)
XP19−24/36/48/60 (rev. 06 or later)
65W70
65W71
87W24/96W55
65W73
87W24/96W55
87W24/96W55
65W72
XC21−24/36/48/60 (rev. 05 thru −07)
XC21−24/36/48/60 (rev. 08 or later)
87W24/96W55
65W74
XP21−24 (rev. 01 thru 04) AND XP21−36/48/60 (rev. 01 thru 03)
XP21−24 (rev. 05 or later) AND XP21−36/48/60 (rev. 04 or later)
87W24/96W55
REVISIONHISTORY
Date
03−2012
05−2012
Revision description
Date
04−2012
09−2012
Revision description
Preliminary release
Pilot release; added note page 1; new registration screen page.26.
Minor Revisions
Changed Wi−Fi button; add Gelaskins; minor software changes; alert
code corrections
506920−01 09/12
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Page 72
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